Merge branch 'bf/set-head-symref'

When "git fetch $remote" notices that refs/remotes/$remote/HEAD is
missing and discovers what branch the other side points with its
HEAD, refs/remotes/$remote/HEAD is updated to point to it.

* bf/set-head-symref:
  fetch set_head: handle mirrored bare repositories
  fetch: set remote/HEAD if it does not exist
  refs: add create_only option to refs_update_symref_extended
  refs: add TRANSACTION_CREATE_EXISTS error
  remote set-head: better output for --auto
  remote set-head: refactor for readability
  refs: atomically record overwritten ref in update_symref
  refs: standardize output of refs_read_symbolic_ref
  t/t5505-remote: test failure of set-head
  t/t5505-remote: set default branch to main

builtin/fetch.c

@@ -1574,6 +1574,72 @@ static int backfill_tags(struct display_state *display_state,
 	return retcode;
 }
 
+static const char *strip_refshead(const char *name){
+	skip_prefix(name, "refs/heads/", &name);
+	return name;
+}
+
+static int set_head(const struct ref *remote_refs)
+{
+	int result = 0, is_bare;
+	struct strbuf b_head = STRBUF_INIT, b_remote_head = STRBUF_INIT;
+	const char *remote = gtransport->remote->name;
+	char *head_name = NULL;
+	struct ref *ref, *matches;
+	struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
+	struct refspec_item refspec = {
+		.force = 0,
+		.pattern = 1,
+		.src = (char *) "refs/heads/*",
+		.dst = (char *) "refs/heads/*",
+	};
+	struct string_list heads = STRING_LIST_INIT_DUP;
+	struct ref_store *refs = get_main_ref_store(the_repository);
+
+	get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
+	matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
+				    fetch_map, 1);
+	for (ref = matches; ref; ref = ref->next) {
+		string_list_append(&heads, strip_refshead(ref->name));
+	}
+
+
+	if (!heads.nr)
+		result = 1;
+	else if (heads.nr > 1)
+		result = 1;
+	else
+		head_name = xstrdup(heads.items[0].string);
+
+	if (!head_name)
+		goto cleanup;
+	is_bare = is_bare_repository();
+	if (is_bare) {
+		strbuf_addstr(&b_head, "HEAD");
+		strbuf_addf(&b_remote_head, "refs/heads/%s", head_name);
+	} else {
+		strbuf_addf(&b_head, "refs/remotes/%s/HEAD", remote);
+		strbuf_addf(&b_remote_head, "refs/remotes/%s/%s", remote, head_name);
+	}
+		/* make sure it's valid */
+	if (!is_bare && !refs_ref_exists(refs, b_remote_head.buf)) {
+		result = 1;
+		goto cleanup;
+	}
+	if (refs_update_symref_extended(refs, b_head.buf, b_remote_head.buf,
+					"fetch", NULL, !is_bare))
+		result = 1;
+
+cleanup:
+	free(head_name);
+	free_refs(fetch_map);
+	free_refs(matches);
+	string_list_clear(&heads, 0);
+	strbuf_release(&b_head);
+	strbuf_release(&b_remote_head);
+	return result;
+}
+
 static int do_fetch(struct transport *transport,
 		    struct refspec *rs,
 		    const struct fetch_config *config)
@@ -1643,6 +1709,8 @@ static int do_fetch(struct transport *transport,
 				    "refs/tags/");
 	}
 
+	strvec_push(&transport_ls_refs_options.ref_prefixes, "HEAD");
+
 	if (must_list_refs) {
 		trace2_region_enter("fetch", "remote_refs", the_repository);
 		remote_refs = transport_get_remote_refs(transport,
@@ -1787,6 +1855,12 @@ static int do_fetch(struct transport *transport,
 				  "you need to specify exactly one branch with the --set-upstream option"));
 		}
 	}
+	if (set_head(remote_refs))
+		;
+		/*
+		 * Way too many cases where this can go wrong
+		 * so let's just fail silently for now.
+		 */
 
 cleanup:
 	if (retcode) {

builtin/remote.c

@@ -1403,12 +1403,41 @@ static int show(int argc, const char **argv, const char *prefix,
 	return result;
 }
 
+static void report_set_head_auto(const char *remote, const char *head_name,
+			struct strbuf *b_local_head, int was_detached) {
+	struct strbuf buf_prefix = STRBUF_INIT;
+	const char *prev_head = NULL;
+
+	strbuf_addf(&buf_prefix, "refs/remotes/%s/", remote);
+	skip_prefix(b_local_head->buf, buf_prefix.buf, &prev_head);
+
+	if (prev_head && !strcmp(prev_head, head_name))
+		printf(_("'%s/HEAD' is unchanged and points to '%s'\n"),
+			remote, head_name);
+	else if (prev_head)
+		printf(_("'%s/HEAD' has changed from '%s' and now points to '%s'\n"),
+			remote, prev_head, head_name);
+	else if (!b_local_head->len)
+		printf(_("'%s/HEAD' is now created and points to '%s'\n"),
+			remote, head_name);
+	else if (was_detached && b_local_head->len)
+		printf(_("'%s/HEAD' was detached at '%s' and now points to '%s'\n"),
+			remote, b_local_head->buf, head_name);
+	else
+		printf(_("'%s/HEAD' used to point to '%s' "
+			"(which is not a remote branch), but now points to '%s'\n"),
+			remote, b_local_head->buf, head_name);
+	strbuf_release(&buf_prefix);
+}
+
 static int set_head(int argc, const char **argv, const char *prefix,
 		    struct repository *repo UNUSED)
 {
-	int i, opt_a = 0, opt_d = 0, result = 0;
+	int i, opt_a = 0, opt_d = 0, result = 0, was_detached;
-	struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
+	struct strbuf b_head = STRBUF_INIT, b_remote_head = STRBUF_INIT,
+		b_local_head = STRBUF_INIT;
 	char *head_name = NULL;
+	struct ref_store *refs = get_main_ref_store(the_repository);
 
 	struct option options[] = {
 		OPT_BOOL('a', "auto", &opt_a,
@@ -1420,7 +1449,7 @@ static int set_head(int argc, const char **argv, const char *prefix,
 	argc = parse_options(argc, argv, prefix, options,
 			     builtin_remote_sethead_usage, 0);
 	if (argc)
-		strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
+		strbuf_addf(&b_head, "refs/remotes/%s/HEAD", argv[0]);
 
 	if (!opt_a && !opt_d && argc == 2) {
 		head_name = xstrdup(argv[1]);
@@ -1439,25 +1468,32 @@ static int set_head(int argc, const char **argv, const char *prefix,
 			head_name = xstrdup(states.heads.items[0].string);
 		free_remote_ref_states(&states);
 	} else if (opt_d && !opt_a && argc == 1) {
-		if (refs_delete_ref(get_main_ref_store(the_repository), NULL, buf.buf, NULL, REF_NO_DEREF))
+		if (refs_delete_ref(refs, NULL, b_head.buf, NULL, REF_NO_DEREF))
-			result |= error(_("Could not delete %s"), buf.buf);
+			result |= error(_("Could not delete %s"), b_head.buf);
 	} else
 		usage_with_options(builtin_remote_sethead_usage, options);
 
-	if (head_name) {
+	if (!head_name)
-		strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
+		goto cleanup;
-		/* make sure it's valid */
+	strbuf_addf(&b_remote_head, "refs/remotes/%s/%s", argv[0], head_name);
-		if (!refs_ref_exists(get_main_ref_store(the_repository), buf2.buf))
+	if (!refs_ref_exists(refs, b_remote_head.buf)) {
-			result |= error(_("Not a valid ref: %s"), buf2.buf);
+		result |= error(_("Not a valid ref: %s"), b_remote_head.buf);
-		else if (refs_update_symref(get_main_ref_store(the_repository), buf.buf, buf2.buf, "remote set-head"))
+		goto cleanup;
-			result |= error(_("Could not setup %s"), buf.buf);
-		else if (opt_a)
-			printf("%s/HEAD set to %s\n", argv[0], head_name);
-		free(head_name);
 	}
+	was_detached = refs_update_symref_extended(refs, b_head.buf, b_remote_head.buf,
+			"remote set-head", &b_local_head, 0);
+	if (was_detached == -1) {
+		result |= error(_("Could not set up %s"), b_head.buf);
+		goto cleanup;
+	}
+	if (opt_a)
+		report_set_head_auto(argv[0], head_name, &b_local_head, was_detached);
 
-	strbuf_release(&buf);
+cleanup:
-	strbuf_release(&buf2);
+	free(head_name);
+	strbuf_release(&b_head);
+	strbuf_release(&b_remote_head);
+	strbuf_release(&b_local_head);
 	return result;
 }
 

refs.c

@@ -2166,20 +2166,54 @@ int peel_iterated_oid(struct repository *r, const struct object_id *base, struct
 
 int refs_update_symref(struct ref_store *refs, const char *ref,
 		       const char *target, const char *logmsg)
+{
+	return refs_update_symref_extended(refs, ref, target, logmsg, NULL, 0);
+}
+
+int refs_update_symref_extended(struct ref_store *refs, const char *ref,
+		       const char *target, const char *logmsg,
+		       struct strbuf *referent, int create_only)
 {
 	struct ref_transaction *transaction;
 	struct strbuf err = STRBUF_INIT;
-	int ret = 0;
+	int ret = 0, prepret = 0;
 
 	transaction = ref_store_transaction_begin(refs, 0, &err);
-	if (!transaction ||
+	if (!transaction) {
-	    ref_transaction_update(transaction, ref, NULL, NULL,
+	error_return:
-				   target, NULL, REF_NO_DEREF,
-				   logmsg, &err) ||
-	    ref_transaction_commit(transaction, &err)) {
 		ret = error("%s", err.buf);
+		goto cleanup;
+	}
+	if (create_only) {
+		if (ref_transaction_create(transaction, ref, NULL, target,
+					   REF_NO_DEREF, logmsg, &err))
+			goto error_return;
+		prepret = ref_transaction_prepare(transaction, &err);
+		if (prepret && prepret != TRANSACTION_CREATE_EXISTS)
+			goto error_return;
+	} else {
+		if (ref_transaction_update(transaction, ref, NULL, NULL,
+					   target, NULL, REF_NO_DEREF,
+					   logmsg, &err) ||
+			ref_transaction_prepare(transaction, &err))
+			goto error_return;
 	}
 
+	if (referent && refs_read_symbolic_ref(refs, ref, referent) == NOT_A_SYMREF) {
+		struct object_id oid;
+		if (!refs_read_ref(refs, ref, &oid)) {
+			strbuf_addstr(referent, oid_to_hex(&oid));
+			ret = NOT_A_SYMREF;
+		}
+	}
+
+	if (prepret == TRANSACTION_CREATE_EXISTS)
+		goto cleanup;
+
+	if (ref_transaction_commit(transaction, &err))
+		goto error_return;
+
+cleanup:
 	strbuf_release(&err);
 	if (transaction)
 		ref_transaction_free(transaction);
@@ -2993,4 +3027,3 @@ int ref_update_expects_existing_old_ref(struct ref_update *update)
 	return (update->flags & REF_HAVE_OLD) &&
 		(!is_null_oid(&update->old_oid) || update->old_target);
 }
-

refs.h

@@ -83,6 +83,17 @@ int refs_read_ref_full(struct ref_store *refs, const char *refname,
 
 int refs_read_ref(struct ref_store *refs, const char *refname, struct object_id *oid);
 
+#define NOT_A_SYMREF -2
+
+/*
+ * Read the symbolic ref named "refname" and write its immediate referent into
+ * the provided buffer. Referent is left empty if "refname" is not a symbolic
+ * ref. It does not resolve the symbolic reference recursively in case the
+ * target is also a symbolic ref.
+ *
+ * Returns 0 on success, -2 if the "refname" is not a symbolic ref,
+ * -1 otherwise.
+ */
 int refs_read_symbolic_ref(struct ref_store *ref_store, const char *refname,
 			   struct strbuf *referent);
 
@@ -604,6 +615,10 @@ int refs_copy_existing_ref(struct ref_store *refs, const char *oldref,
 int refs_update_symref(struct ref_store *refs, const char *refname,
 		       const char *target, const char *logmsg);
 
+int refs_update_symref_extended(struct ref_store *refs, const char *refname,
+		       const char *target, const char *logmsg,
+		       struct strbuf *referent, int create_only);
+
 enum action_on_err {
 	UPDATE_REFS_MSG_ON_ERR,
 	UPDATE_REFS_DIE_ON_ERR,
@@ -805,8 +820,10 @@ int ref_transaction_verify(struct ref_transaction *transaction,
 
 /* Naming conflict (for example, the ref names A and A/B conflict). */
 #define TRANSACTION_NAME_CONFLICT -1
+/* When only creation was requested, but the ref already exists. */
+#define TRANSACTION_CREATE_EXISTS -2
 /* All other errors. */
-#define TRANSACTION_GENERIC_ERROR -2
+#define TRANSACTION_GENERIC_ERROR -3
 
 /*
  * Perform the preparatory stages of committing `transaction`. Acquire

refs/files-backend.c

@@ -598,10 +598,9 @@ static int files_read_symbolic_ref(struct ref_store *ref_store, const char *refn
 	unsigned int type;
 
 	ret = read_ref_internal(ref_store, refname, &oid, referent, &type, &failure_errno, 1);
-	if (ret)
+	if (!ret && !(type & REF_ISSYMREF))
-		return ret;
+		return NOT_A_SYMREF;
-
+	return ret;
-	return !(type & REF_ISSYMREF);
 }
 
 int parse_loose_ref_contents(const struct git_hash_algo *algop,
@@ -2509,14 +2508,18 @@ static int split_symref_update(struct ref_update *update,
 static int check_old_oid(struct ref_update *update, struct object_id *oid,
 			 struct strbuf *err)
 {
+	int ret = TRANSACTION_GENERIC_ERROR;
+
 	if (!(update->flags & REF_HAVE_OLD) ||
 		   oideq(oid, &update->old_oid))
 		return 0;
 
-	if (is_null_oid(&update->old_oid))
+	if (is_null_oid(&update->old_oid)) {
 		strbuf_addf(err, "cannot lock ref '%s': "
 			    "reference already exists",
 			    ref_update_original_update_refname(update));
+		ret = TRANSACTION_CREATE_EXISTS;
+	}
 	else if (is_null_oid(oid))
 		strbuf_addf(err, "cannot lock ref '%s': "
 			    "reference is missing but expected %s",
@@ -2529,7 +2532,7 @@ static int check_old_oid(struct ref_update *update, struct object_id *oid,
 			    oid_to_hex(oid),
 			    oid_to_hex(&update->old_oid));
 
-	return -1;
+	return ret;
 }
 
 /*
@@ -2609,9 +2612,11 @@ static int lock_ref_for_update(struct files_ref_store *refs,
 					ret = TRANSACTION_GENERIC_ERROR;
 					goto out;
 				}
-			} else if  (check_old_oid(update, &lock->old_oid, err)) {
+			} else {
-				ret = TRANSACTION_GENERIC_ERROR;
+				ret = check_old_oid(update, &lock->old_oid, err);
-				goto out;
+				if  (ret) {
+					goto out;
+				}
 			}
 		} else {
 			/*
@@ -2642,9 +2647,11 @@ static int lock_ref_for_update(struct files_ref_store *refs,
 				    update->old_target);
 			ret = TRANSACTION_GENERIC_ERROR;
 			goto out;
-		} else if  (check_old_oid(update, &lock->old_oid, err)) {
+		} else {
-			ret = TRANSACTION_GENERIC_ERROR;
+			ret = check_old_oid(update, &lock->old_oid, err);
-			goto out;
+			if  (ret) {
+				goto out;
+			}
 		}
 
 		/*

refs/refs-internal.h

@@ -674,6 +674,11 @@ struct ref_storage_be {
 
 	ref_iterator_begin_fn *iterator_begin;
 	read_raw_ref_fn *read_raw_ref;
+
+	/*
+	 * Please refer to `refs_read_symbolic_ref()` for the expected
+	 * behaviour.
+	 */
 	read_symbolic_ref_fn *read_symbolic_ref;
 
 	reflog_iterator_begin_fn *reflog_iterator_begin;

refs/reftable-backend.c

@@ -920,8 +920,12 @@ static int reftable_be_read_symbolic_ref(struct ref_store *ref_store,
 		return ret;
 
 	ret = reftable_backend_read_ref(be, refname, &oid, referent, &type);
-	if (type != REF_ISSYMREF)
+	if (ret)
 		ret = -1;
+	else if (type == REF_ISSYMREF)
+		; /* happy */
+	else
+		ret = NOT_A_SYMREF;
 	return ret;
 }
 
@@ -1328,10 +1332,13 @@ static int reftable_be_transaction_prepare(struct ref_store *ref_store,
 				goto done;
 			}
 		} else if ((u->flags & REF_HAVE_OLD) && !oideq(&current_oid, &u->old_oid)) {
-			if (is_null_oid(&u->old_oid))
+			ret = TRANSACTION_NAME_CONFLICT;
+			if (is_null_oid(&u->old_oid)) {
 				strbuf_addf(err, _("cannot lock ref '%s': "
 						   "reference already exists"),
 					    ref_update_original_update_refname(u));
+				ret = TRANSACTION_CREATE_EXISTS;
+			}
 			else if (is_null_oid(&current_oid))
 				strbuf_addf(err, _("cannot lock ref '%s': "
 						   "reference is missing but expected %s"),
@@ -1343,7 +1350,6 @@ static int reftable_be_transaction_prepare(struct ref_store *ref_store,
 					    ref_update_original_update_refname(u),
 					    oid_to_hex(&current_oid),
 					    oid_to_hex(&u->old_oid));
-			ret = -1;
 			goto done;
 		}
 

t/t4207-log-decoration-colors.sh

@@ -58,7 +58,8 @@ ${c_reset}${c_tag}tag: ${c_reset}${c_tag}v1.0${c_reset}${c_commit}, \
 ${c_reset}${c_tag}tag: ${c_reset}${c_tag}B${c_reset}${c_commit})${c_reset} B
 ${c_commit}COMMIT_ID${c_reset}${c_commit} (${c_reset}\
 ${c_tag}tag: ${c_reset}${c_tag}A1${c_reset}${c_commit}, \
-${c_reset}${c_remoteBranch}other/main${c_reset}${c_commit})${c_reset} A1
+${c_reset}${c_remoteBranch}other/main${c_reset}${c_commit}, \
+${c_reset}${c_remoteBranch}other/HEAD${c_reset}${c_commit})${c_reset} A1
 	${c_commit}COMMIT_ID${c_reset}${c_commit} (${c_reset}\
 ${c_stash}refs/stash${c_reset}${c_commit})${c_reset} On main: Changes to A.t
 	${c_commit}COMMIT_ID${c_reset}${c_commit} (${c_reset}\

t/t5505-remote.sh

@@ -2,6 +2,9 @@
 
 test_description='git remote porcelain-ish'
 
+GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
+export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
+
 . ./test-lib.sh
 
 setup_repository () {
@@ -70,7 +73,7 @@ test_expect_success 'add another remote' '
 		cd test &&
 		git remote add -f second ../two &&
 		tokens_match "origin second" "$(git remote)" &&
-		check_tracking_branch second main side another &&
+		check_tracking_branch second main side another HEAD &&
 		git for-each-ref "--format=%(refname)" refs/remotes |
 		sed -e "/^refs\/remotes\/origin\//d" \
 		    -e "/^refs\/remotes\/second\//d" >actual &&
@@ -428,12 +431,75 @@ test_expect_success 'set-head --auto' '
 	)
 '
 
+test_expect_success REFFILES 'set-head --auto failure' '
+	test_when_finished "rm -f test/.git/refs/remotes/origin/HEAD.lock" &&
+	(
+		cd test &&
+		touch .git/refs/remotes/origin/HEAD.lock &&
+		test_must_fail git remote set-head --auto origin 2>err &&
+		tail -n1 err >output &&
+		echo "error: Could not set up refs/remotes/origin/HEAD" >expect &&
+		test_cmp expect output
+	)
+'
+
+test_expect_success 'set-head --auto detects creation' '
+	(
+		cd test &&
+		git update-ref --no-deref -d refs/remotes/origin/HEAD &&
+		git remote set-head --auto origin >output &&
+		echo "${SQ}origin/HEAD${SQ} is now created and points to ${SQ}main${SQ}" >expect &&
+		test_cmp expect output
+	)
+'
+
+test_expect_success 'set-head --auto to update a non symbolic ref' '
+	(
+		cd test &&
+		git update-ref --no-deref -d refs/remotes/origin/HEAD &&
+		git update-ref refs/remotes/origin/HEAD HEAD &&
+		HEAD=$(git log --pretty="%H") &&
+		git remote set-head --auto origin >output &&
+		echo "${SQ}origin/HEAD${SQ} was detached at ${SQ}${HEAD}${SQ} and now points to ${SQ}main${SQ}" >expect &&
+		test_cmp expect output
+	)
+'
+
+test_expect_success 'set-head --auto detects no change' '
+	(
+		cd test &&
+		git remote set-head --auto origin >output &&
+		echo "${SQ}origin/HEAD${SQ} is unchanged and points to ${SQ}main${SQ}" >expect &&
+		test_cmp expect output
+	)
+'
+
+test_expect_success 'set-head --auto detects change' '
+	(
+		cd test &&
+		git symbolic-ref refs/remotes/origin/HEAD refs/remotes/origin/ahead &&
+		git remote set-head --auto origin >output &&
+		echo "${SQ}origin/HEAD${SQ} has changed from ${SQ}ahead${SQ} and now points to ${SQ}main${SQ}" >expect &&
+		test_cmp expect output
+	)
+'
+
+test_expect_success 'set-head --auto detects strange ref' '
+	(
+		cd test &&
+		git symbolic-ref refs/remotes/origin/HEAD refs/heads/main &&
+		git remote set-head --auto origin >output &&
+		echo "${SQ}origin/HEAD${SQ} used to point to ${SQ}refs/heads/main${SQ} (which is not a remote branch), but now points to ${SQ}main${SQ}" >expect &&
+		test_cmp expect output
+	)
+'
+
 test_expect_success 'set-head --auto has no problem w/multiple HEADs' '
 	(
 		cd test &&
 		git fetch two "refs/heads/*:refs/remotes/two/*" &&
 		git remote set-head --auto two >output 2>&1 &&
-		echo "two/HEAD set to main" >expect &&
+		echo "${SQ}two/HEAD${SQ} is unchanged and points to ${SQ}main${SQ}" >expect &&
 		test_cmp expect output
 	)
 '
@@ -452,6 +518,16 @@ test_expect_success 'set-head explicit' '
 	)
 '
 
+test_expect_success 'set-head --auto reports change' '
+	(
+		cd test &&
+		git remote set-head origin side2 &&
+		git remote set-head --auto origin >output 2>&1 &&
+		echo "${SQ}origin/HEAD${SQ} has changed from ${SQ}side2${SQ} and now points to ${SQ}main${SQ}" >expect &&
+		test_cmp expect output
+	)
+'
+
 cat >test/expect <<EOF
 Pruning origin
 URL: $(pwd)/one
@@ -492,6 +568,16 @@ test_expect_success 'add --mirror && prune' '
 	)
 '
 
+test_expect_success 'add --mirror setting HEAD' '
+	mkdir headmirror &&
+	(
+		cd headmirror &&
+		git init --bare -b notmain &&
+		git remote add --mirror -f origin ../one &&
+		test "$(git symbolic-ref HEAD)" = "refs/heads/main"
+	)
+'
+
 test_expect_success 'add --mirror=fetch' '
 	mkdir mirror-fetch &&
 	git init -b main mirror-fetch/parent &&
@@ -711,8 +797,10 @@ test_expect_success 'reject --no-no-tags' '
 '
 
 cat >one/expect <<\EOF
+  apis/HEAD -> apis/main
   apis/main
   apis/side
+  drosophila/HEAD -> drosophila/main
   drosophila/another
   drosophila/main
   drosophila/side
@@ -730,11 +818,14 @@ test_expect_success 'update' '
 '
 
 cat >one/expect <<\EOF
+  drosophila/HEAD -> drosophila/main
   drosophila/another
   drosophila/main
   drosophila/side
+  manduca/HEAD -> manduca/main
   manduca/main
   manduca/side
+  megaloprepus/HEAD -> megaloprepus/main
   megaloprepus/main
   megaloprepus/side
 EOF
@@ -742,7 +833,7 @@ EOF
 test_expect_success 'update with arguments' '
 	(
 		cd one &&
-		for b in $(git branch -r)
+		for b in $(git branch -r | grep -v HEAD)
 		do
 		git branch -r -d $b || exit 1
 		done &&
@@ -774,10 +865,13 @@ test_expect_success 'update --prune' '
 '
 
 cat >one/expect <<-\EOF
+  apis/HEAD -> apis/main
   apis/main
   apis/side
+  manduca/HEAD -> manduca/main
   manduca/main
   manduca/side
+  megaloprepus/HEAD -> megaloprepus/main
   megaloprepus/main
   megaloprepus/side
 EOF
@@ -785,7 +879,7 @@ EOF
 test_expect_success 'update default' '
 	(
 		cd one &&
-		for b in $(git branch -r)
+		for b in $(git branch -r | grep -v HEAD)
 		do
 		git branch -r -d $b || exit 1
 		done &&
@@ -797,6 +891,7 @@ test_expect_success 'update default' '
 '
 
 cat >one/expect <<\EOF
+  drosophila/HEAD -> drosophila/main
   drosophila/another
   drosophila/main
   drosophila/side
@@ -805,7 +900,7 @@ EOF
 test_expect_success 'update default (overridden, with funny whitespace)' '
 	(
 		cd one &&
-		for b in $(git branch -r)
+		for b in $(git branch -r | grep -v HEAD)
 		do
 		git branch -r -d $b || exit 1
 		done &&
@@ -819,7 +914,7 @@ test_expect_success 'update default (overridden, with funny whitespace)' '
 test_expect_success 'update (with remotes.default defined)' '
 	(
 		cd one &&
-		for b in $(git branch -r)
+		for b in $(git branch -r | grep -v HEAD)
 		do
 		git branch -r -d $b || exit 1
 		done &&

t/t5510-fetch.sh

@@ -74,6 +74,30 @@ test_expect_success "fetch test for-merge" '
 	cut -f -2 .git/FETCH_HEAD >actual &&
 	test_cmp expected actual'
 
+test_expect_success "fetch test remote HEAD" '
+	cd "$D" &&
+	cd two &&
+	git fetch &&
+	git rev-parse --verify refs/remotes/origin/HEAD &&
+	git rev-parse --verify refs/remotes/origin/main &&
+	head=$(git rev-parse refs/remotes/origin/HEAD) &&
+	branch=$(git rev-parse refs/remotes/origin/main) &&
+	test "z$head" = "z$branch"'
+
+test_expect_success "fetch test remote HEAD change" '
+	cd "$D" &&
+	cd two &&
+	git switch -c other &&
+	git push -u origin other &&
+	git rev-parse --verify refs/remotes/origin/HEAD &&
+	git rev-parse --verify refs/remotes/origin/main &&
+	git rev-parse --verify refs/remotes/origin/other &&
+	git remote set-head origin other &&
+	git fetch &&
+	head=$(git rev-parse refs/remotes/origin/HEAD) &&
+	branch=$(git rev-parse refs/remotes/origin/other) &&
+	test "z$head" = "z$branch"'
+
 test_expect_success 'fetch --prune on its own works as expected' '
 	cd "$D" &&
 	git clone . prune &&

t/t5512-ls-remote.sh

@@ -292,6 +292,8 @@ test_expect_success 'ls-remote with filtered symref (refname)' '
 	cat >expect <<-EOF &&
 	ref: refs/heads/main	HEAD
 	$rev	HEAD
+	ref: refs/remotes/origin/main	refs/remotes/origin/HEAD
+	$rev	refs/remotes/origin/HEAD
 	EOF
 	git ls-remote --symref . HEAD >actual &&
 	test_cmp expect actual

t/t5514-fetch-multiple.sh

@@ -44,14 +44,17 @@ test_expect_success setup '
 '
 
 cat > test/expect << EOF
+  one/HEAD -> one/main
   one/main
   one/side
   origin/HEAD -> origin/main
   origin/main
   origin/side
+  three/HEAD -> three/main
   three/another
   three/main
   three/side
+  two/HEAD -> two/main
   two/another
   two/main
   two/side
@@ -96,6 +99,7 @@ cat > expect << EOF
   origin/HEAD -> origin/main
   origin/main
   origin/side
+  three/HEAD -> three/main
   three/another
   three/main
   three/side
@@ -111,8 +115,10 @@ test_expect_success 'git fetch --multiple (but only one remote)' '
 '
 
 cat > expect << EOF
+  one/HEAD -> one/main
   one/main
   one/side
+  two/HEAD -> two/main
   two/another
   two/main
   two/side
@@ -140,7 +146,7 @@ test_expect_success 'git fetch --multiple (bad remote names)' '
 
 test_expect_success 'git fetch --all (skipFetchAll)' '
 	(cd test4 &&
-	 for b in $(git branch -r)
+	 for b in $(git branch -r | grep -v HEAD)
 	 do
 		git branch -r -d $b || exit 1
 	 done &&
@@ -152,11 +158,14 @@ test_expect_success 'git fetch --all (skipFetchAll)' '
 '
 
 cat > expect << EOF
+  one/HEAD -> one/main
   one/main
   one/side
+  three/HEAD -> three/main
   three/another
   three/main
   three/side
+  two/HEAD -> two/main
   two/another
   two/main
   two/side
@@ -164,7 +173,7 @@ EOF
 
 test_expect_success 'git fetch --multiple (ignoring skipFetchAll)' '
 	(cd test4 &&
-	 for b in $(git branch -r)
+	 for b in $(git branch -r | grep -v HEAD)
 	 do
 		git branch -r -d $b || exit 1
 	 done &&
@@ -220,14 +229,17 @@ test_expect_success 'git fetch --multiple --jobs=0 picks a default' '
 
 create_fetch_all_expect () {
 	cat >expect <<-\EOF
+	  one/HEAD -> one/main
 	  one/main
 	  one/side
 	  origin/HEAD -> origin/main
 	  origin/main
 	  origin/side
+	  three/HEAD -> three/main
 	  three/another
 	  three/main
 	  three/side
+	  two/HEAD -> two/main
 	  two/another
 	  two/main
 	  two/side
@@ -264,6 +276,7 @@ test_expect_success 'git fetch (fetch all remotes with fetch.all = true)' '
 
 create_fetch_one_expect () {
 	cat >expect <<-\EOF
+	  one/HEAD -> one/main
 	  one/main
 	  one/side
 	  origin/HEAD -> origin/main

t/t5516-fetch-push.sh

@@ -1394,7 +1394,8 @@ test_expect_success 'fetch follows tags by default' '
 		git tag -m "annotated" tag &&
 		git for-each-ref >tmp1 &&
 		sed -n "p; s|refs/heads/main$|refs/remotes/origin/main|p" tmp1 |
-		sort -k 3 >../expect
+		sed -n "p; s|refs/heads/main$|refs/remotes/origin/HEAD|p"  |
+		sort -k 4 >../expect
 	) &&
 	test_when_finished "rm -rf dst" &&
 	git init dst &&

t/t5527-fetch-odd-refs.sh

@@ -51,7 +51,8 @@ test_expect_success LONG_REF 'fetch handles extremely long refname' '
 	long
 	main
 	EOF
-	git for-each-ref --format="%(subject)" refs/remotes/long >actual &&
+	git for-each-ref --format="%(subject)" refs/remotes/long \
+		--exclude=refs/remotes/long/HEAD >actual &&
 	test_cmp expect actual
 '
 

t/t7900-maintenance.sh

@@ -328,7 +328,8 @@ test_expect_success 'incremental-repack task' '
 
 	# Delete refs that have not been repacked in these packs.
 	git for-each-ref --format="delete %(refname)" \
-		refs/prefetch refs/tags refs/remotes >refs &&
+		refs/prefetch refs/tags refs/remotes \
+		--exclude=refs/remotes/*/HEAD >refs &&
 	git update-ref --stdin <refs &&
 
 	# Replace the object directory with this pack layout.

t/t9210-scalar.sh

@@ -150,7 +150,8 @@ test_expect_success 'scalar clone' '
 			"$(pwd)" &&
 
 		git for-each-ref --format="%(refname)" refs/remotes/origin/ >actual &&
-		echo "refs/remotes/origin/parallel" >expect &&
+		echo "refs/remotes/origin/HEAD" >>expect &&
+		echo "refs/remotes/origin/parallel" >>expect &&
 		test_cmp expect actual &&
 
 		test_path_is_missing 1/2 &&
@@ -219,7 +220,7 @@ test_expect_success 'scalar reconfigure --all with includeIf.onbranch' '
 	done
 '
 
- test_expect_success 'scalar reconfigure --all with detached HEADs' '
+test_expect_success 'scalar reconfigure --all with detached HEADs' '
 	repos="two three four" &&
 	for num in $repos
 	do

t/t9211-scalar-clone.sh

@@ -31,7 +31,7 @@ test_expect_success 'set up repository to clone' '
 	)
 '
 
-cleanup_clone () {
+cleanup_clone() {
 	rm -rf "$1"
 }
 
@@ -127,7 +127,7 @@ test_expect_success '--single-branch clones HEAD only' '
 	(
 		cd $enlistment/src &&
 		git for-each-ref refs/remotes/origin >out &&
-		test_line_count = 1 out &&
+		test_line_count = 2 out &&
 		grep "refs/remotes/origin/base" out
 	) &&
 
@@ -141,7 +141,7 @@ test_expect_success '--no-single-branch clones all branches' '
 	(
 		cd $enlistment/src &&
 		git for-each-ref refs/remotes/origin >out &&
-		test_line_count = 2 out &&
+		test_line_count = 3 out &&
 		grep "refs/remotes/origin/base" out &&
 		grep "refs/remotes/origin/parallel" out
 	) &&

t/t9902-completion.sh

@@ -657,6 +657,7 @@ test_expect_success '__git_refs - simple' '
 	HEAD
 	main
 	matching-branch
+	other/HEAD
 	other/branch-in-other
 	other/main-in-other
 	matching-tag
@@ -672,6 +673,7 @@ test_expect_success '__git_refs - full refs' '
 	cat >expected <<-EOF &&
 	refs/heads/main
 	refs/heads/matching-branch
+	refs/remotes/other/HEAD
 	refs/remotes/other/branch-in-other
 	refs/remotes/other/main-in-other
 	refs/tags/matching-tag
@@ -728,6 +730,7 @@ test_expect_success '__git_refs - remote on local file system - full refs' '
 test_expect_success '__git_refs - configured remote' '
 	cat >expected <<-EOF &&
 	HEAD
+	HEAD
 	branch-in-other
 	main-in-other
 	EOF
@@ -755,6 +758,7 @@ test_expect_success '__git_refs - configured remote - full refs' '
 test_expect_success '__git_refs - configured remote - repo given on the command line' '
 	cat >expected <<-EOF &&
 	HEAD
+	HEAD
 	branch-in-other
 	main-in-other
 	EOF
@@ -786,6 +790,7 @@ test_expect_success '__git_refs - configured remote - full refs - repo given on
 test_expect_success '__git_refs - configured remote - remote name matches a directory' '
 	cat >expected <<-EOF &&
 	HEAD
+	HEAD
 	branch-in-other
 	main-in-other
 	EOF
@@ -874,12 +879,14 @@ test_expect_success '__git_refs - unique remote branches for git checkout DWIMer
 	HEAD
 	main
 	matching-branch
+	other/HEAD
 	other/ambiguous
 	other/branch-in-other
 	other/main-in-other
 	remote/ambiguous
 	remote/branch-in-remote
 	matching-tag
+	HEAD
 	branch-in-other
 	branch-in-remote
 	main-in-other
@@ -903,6 +910,7 @@ test_expect_success '__git_refs - after --opt=' '
 	HEAD
 	main
 	matching-branch
+	other/HEAD
 	other/branch-in-other
 	other/main-in-other
 	matching-tag
@@ -918,6 +926,7 @@ test_expect_success '__git_refs - after --opt= - full refs' '
 	cat >expected <<-EOF &&
 	refs/heads/main
 	refs/heads/matching-branch
+	refs/remotes/other/HEAD
 	refs/remotes/other/branch-in-other
 	refs/remotes/other/main-in-other
 	refs/tags/matching-tag
@@ -934,6 +943,7 @@ test_expect_success '__git refs - excluding refs' '
 	^HEAD
 	^main
 	^matching-branch
+	^other/HEAD
 	^other/branch-in-other
 	^other/main-in-other
 	^matching-tag
@@ -949,6 +959,7 @@ test_expect_success '__git refs - excluding full refs' '
 	cat >expected <<-EOF &&
 	^refs/heads/main
 	^refs/heads/matching-branch
+	^refs/remotes/other/HEAD
 	^refs/remotes/other/branch-in-other
 	^refs/remotes/other/main-in-other
 	^refs/tags/matching-tag
@@ -974,6 +985,7 @@ test_expect_success '__git_refs - do not filter refs unless told so' '
 	main
 	matching-branch
 	matching/branch
+	other/HEAD
 	other/branch-in-other
 	other/main-in-other
 	other/matching/branch-in-other
@@ -1094,6 +1106,7 @@ test_expect_success '__git_complete_refs - simple' '
 	HEAD Z
 	main Z
 	matching-branch Z
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	matching-tag Z
@@ -1122,6 +1135,7 @@ test_expect_success '__git_complete_refs - matching' '
 test_expect_success '__git_complete_refs - remote' '
 	sed -e "s/Z$//" >expected <<-EOF &&
 	HEAD Z
+	HEAD Z
 	branch-in-other Z
 	main-in-other Z
 	EOF
@@ -1138,9 +1152,11 @@ test_expect_success '__git_complete_refs - track' '
 	HEAD Z
 	main Z
 	matching-branch Z
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	matching-tag Z
+	HEAD Z
 	branch-in-other Z
 	main-in-other Z
 	EOF
@@ -1183,6 +1199,7 @@ test_expect_success '__git_complete_refs - suffix' '
 	HEAD.
 	main.
 	matching-branch.
+	other/HEAD.
 	other/branch-in-other.
 	other/main-in-other.
 	matching-tag.
@@ -1198,6 +1215,7 @@ test_expect_success '__git_complete_refs - suffix' '
 test_expect_success '__git_complete_fetch_refspecs - simple' '
 	sed -e "s/Z$//" >expected <<-EOF &&
 	HEAD:HEAD Z
+	HEAD:HEAD Z
 	branch-in-other:branch-in-other Z
 	main-in-other:main-in-other Z
 	EOF
@@ -1224,6 +1242,7 @@ test_expect_success '__git_complete_fetch_refspecs - matching' '
 test_expect_success '__git_complete_fetch_refspecs - prefix' '
 	sed -e "s/Z$//" >expected <<-EOF &&
 	+HEAD:HEAD Z
+	+HEAD:HEAD Z
 	+branch-in-other:branch-in-other Z
 	+main-in-other:main-in-other Z
 	EOF
@@ -1288,6 +1307,7 @@ test_expect_success '__git_complete_worktree_paths with -C' '
 
 test_expect_success 'git switch - with no options, complete local branches and unique remote branch names for DWIM logic' '
 	test_completion "git switch " <<-\EOF
+	HEAD Z
 	branch-in-other Z
 	main Z
 	main-in-other Z
@@ -1434,11 +1454,13 @@ test_expect_success 'git-bisect - existing view subcommand is recognized and ena
 test_expect_success 'git checkout - completes refs and unique remote branches for DWIM' '
 	test_completion "git checkout " <<-\EOF
 	HEAD Z
+	HEAD Z
 	branch-in-other Z
 	main Z
 	main-in-other Z
 	matching-branch Z
 	matching-tag Z
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF
@@ -1460,6 +1482,7 @@ test_expect_success 'git switch - with GIT_COMPLETION_CHECKOUT_NO_GUESS=1, compl
 
 test_expect_success 'git switch - --guess overrides GIT_COMPLETION_CHECKOUT_NO_GUESS=1, complete local branches and unique remote names for DWIM logic' '
 	GIT_COMPLETION_CHECKOUT_NO_GUESS=1 test_completion "git switch --guess " <<-\EOF
+	HEAD Z
 	branch-in-other Z
 	main Z
 	main-in-other Z
@@ -1469,6 +1492,7 @@ test_expect_success 'git switch - --guess overrides GIT_COMPLETION_CHECKOUT_NO_G
 
 test_expect_success 'git switch - a later --guess overrides previous --no-guess, complete local and remote unique branches for DWIM' '
 	test_completion "git switch --no-guess --guess " <<-\EOF
+	HEAD Z
 	branch-in-other Z
 	main Z
 	main-in-other Z
@@ -1489,6 +1513,7 @@ test_expect_success 'git checkout - with GIT_COMPLETION_NO_GUESS=1 only complete
 	main Z
 	matching-branch Z
 	matching-tag Z
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF
@@ -1497,11 +1522,13 @@ test_expect_success 'git checkout - with GIT_COMPLETION_NO_GUESS=1 only complete
 test_expect_success 'git checkout - --guess overrides GIT_COMPLETION_NO_GUESS=1, complete refs and unique remote branches for DWIM' '
 	GIT_COMPLETION_CHECKOUT_NO_GUESS=1 test_completion "git checkout --guess " <<-\EOF
 	HEAD Z
+	HEAD Z
 	branch-in-other Z
 	main Z
 	main-in-other Z
 	matching-branch Z
 	matching-tag Z
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF
@@ -1513,6 +1540,7 @@ test_expect_success 'git checkout - with --no-guess, only completes refs' '
 	main Z
 	matching-branch Z
 	matching-tag Z
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF
@@ -1521,11 +1549,13 @@ test_expect_success 'git checkout - with --no-guess, only completes refs' '
 test_expect_success 'git checkout - a later --guess overrides previous --no-guess, complete refs and unique remote branches for DWIM' '
 	test_completion "git checkout --no-guess --guess " <<-\EOF
 	HEAD Z
+	HEAD Z
 	branch-in-other Z
 	main Z
 	main-in-other Z
 	matching-branch Z
 	matching-tag Z
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF
@@ -1537,6 +1567,7 @@ test_expect_success 'git checkout - a later --no-guess overrides previous --gues
 	main Z
 	matching-branch Z
 	matching-tag Z
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF
@@ -1549,6 +1580,7 @@ test_expect_success 'git checkout - with checkout.guess = false, only completes
 	main Z
 	matching-branch Z
 	matching-tag Z
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF
@@ -1558,11 +1590,13 @@ test_expect_success 'git checkout - with checkout.guess = true, completes refs a
 	test_config checkout.guess true &&
 	test_completion "git checkout " <<-\EOF
 	HEAD Z
+	HEAD Z
 	branch-in-other Z
 	main Z
 	main-in-other Z
 	matching-branch Z
 	matching-tag Z
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF
@@ -1572,11 +1606,13 @@ test_expect_success 'git checkout - a later --guess overrides previous checkout.
 	test_config checkout.guess false &&
 	test_completion "git checkout --guess " <<-\EOF
 	HEAD Z
+	HEAD Z
 	branch-in-other Z
 	main Z
 	main-in-other Z
 	matching-branch Z
 	matching-tag Z
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF
@@ -1589,6 +1625,7 @@ test_expect_success 'git checkout - a later --no-guess overrides previous checko
 	main Z
 	matching-branch Z
 	matching-tag Z
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF
@@ -1600,6 +1637,7 @@ test_expect_success 'git switch - with --detach, complete all references' '
 	main Z
 	matching-branch Z
 	matching-tag Z
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF
@@ -1611,6 +1649,7 @@ test_expect_success 'git checkout - with --detach, complete only references' '
 	main Z
 	matching-branch Z
 	matching-tag Z
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF
@@ -1782,6 +1821,7 @@ test_expect_success 'git switch - with -d, complete all references' '
 	main Z
 	matching-branch Z
 	matching-tag Z
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF
@@ -1793,6 +1833,7 @@ test_expect_success 'git checkout - with -d, complete only references' '
 	main Z
 	matching-branch Z
 	matching-tag Z
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF
@@ -1800,10 +1841,12 @@ test_expect_success 'git checkout - with -d, complete only references' '
 
 test_expect_success 'git switch - with --track, complete only remote branches' '
 	test_completion "git switch --track " <<-\EOF &&
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF
 	test_completion "git switch -t " <<-\EOF
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF
@@ -1811,10 +1854,12 @@ test_expect_success 'git switch - with --track, complete only remote branches' '
 
 test_expect_success 'git checkout - with --track, complete only remote branches' '
 	test_completion "git checkout --track " <<-\EOF &&
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF
 	test_completion "git checkout -t " <<-\EOF
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF
@@ -1833,6 +1878,7 @@ test_expect_success 'git checkout - with --no-track, complete only local referen
 	main Z
 	matching-branch Z
 	matching-tag Z
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF
@@ -1844,6 +1890,7 @@ test_expect_success 'git switch - with -c, complete all references' '
 	main Z
 	matching-branch Z
 	matching-tag Z
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF
@@ -1855,6 +1902,7 @@ test_expect_success 'git switch - with -C, complete all references' '
 	main Z
 	matching-branch Z
 	matching-tag Z
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF
@@ -1866,6 +1914,7 @@ test_expect_success 'git switch - with -c and --track, complete all references'
 	main Z
 	matching-branch Z
 	matching-tag Z
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF
@@ -1877,6 +1926,7 @@ test_expect_success 'git switch - with -C and --track, complete all references'
 	main Z
 	matching-branch Z
 	matching-tag Z
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF
@@ -1888,6 +1938,7 @@ test_expect_success 'git switch - with -c and --no-track, complete all reference
 	main Z
 	matching-branch Z
 	matching-tag Z
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF
@@ -1899,6 +1950,7 @@ test_expect_success 'git switch - with -C and --no-track, complete all reference
 	main Z
 	matching-branch Z
 	matching-tag Z
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF
@@ -1910,6 +1962,7 @@ test_expect_success 'git checkout - with -b, complete all references' '
 	main Z
 	matching-branch Z
 	matching-tag Z
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF
@@ -1921,6 +1974,7 @@ test_expect_success 'git checkout - with -B, complete all references' '
 	main Z
 	matching-branch Z
 	matching-tag Z
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF
@@ -1932,6 +1986,7 @@ test_expect_success 'git checkout - with -b and --track, complete all references
 	main Z
 	matching-branch Z
 	matching-tag Z
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF
@@ -1943,6 +1998,7 @@ test_expect_success 'git checkout - with -B and --track, complete all references
 	main Z
 	matching-branch Z
 	matching-tag Z
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF
@@ -1954,6 +2010,7 @@ test_expect_success 'git checkout - with -b and --no-track, complete all referen
 	main Z
 	matching-branch Z
 	matching-tag Z
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF
@@ -1965,6 +2022,7 @@ test_expect_success 'git checkout - with -B and --no-track, complete all referen
 	main Z
 	matching-branch Z
 	matching-tag Z
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF
@@ -1972,6 +2030,7 @@ test_expect_success 'git checkout - with -B and --no-track, complete all referen
 
 test_expect_success 'git switch - for -c, complete local branches and unique remote branches' '
 	test_completion "git switch -c " <<-\EOF
+	HEAD Z
 	branch-in-other Z
 	main Z
 	main-in-other Z
@@ -1981,6 +2040,7 @@ test_expect_success 'git switch - for -c, complete local branches and unique rem
 
 test_expect_success 'git switch - for -C, complete local branches and unique remote branches' '
 	test_completion "git switch -C " <<-\EOF
+	HEAD Z
 	branch-in-other Z
 	main Z
 	main-in-other Z
@@ -2018,6 +2078,7 @@ test_expect_success 'git switch - for -C with --no-track, complete local branche
 
 test_expect_success 'git checkout - for -b, complete local branches and unique remote branches' '
 	test_completion "git checkout -b " <<-\EOF
+	HEAD Z
 	branch-in-other Z
 	main Z
 	main-in-other Z
@@ -2027,6 +2088,7 @@ test_expect_success 'git checkout - for -b, complete local branches and unique r
 
 test_expect_success 'git checkout - for -B, complete local branches and unique remote branches' '
 	test_completion "git checkout -B " <<-\EOF
+	HEAD Z
 	branch-in-other Z
 	main Z
 	main-in-other Z
@@ -2064,6 +2126,7 @@ test_expect_success 'git checkout - for -B with --no-track, complete local branc
 
 test_expect_success 'git switch - with --orphan completes local branch names and unique remote branch names' '
 	test_completion "git switch --orphan " <<-\EOF
+	HEAD Z
 	branch-in-other Z
 	main Z
 	main-in-other Z
@@ -2079,6 +2142,7 @@ test_expect_success 'git switch - --orphan with branch already provided complete
 
 test_expect_success 'git checkout - with --orphan completes local branch names and unique remote branch names' '
 	test_completion "git checkout --orphan " <<-\EOF
+	HEAD Z
 	branch-in-other Z
 	main Z
 	main-in-other Z
@@ -2092,6 +2156,7 @@ test_expect_success 'git checkout - --orphan with branch already provided comple
 	main Z
 	matching-branch Z
 	matching-tag Z
+	other/HEAD Z
 	other/branch-in-other Z
 	other/main-in-other Z
 	EOF