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Merge branch 'bf/fetch-set-head-fix'

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Fetching into a bare repository incorrectly assumed it always used
a mirror layout when deciding to update remote-tracking HEAD, which
has been corrected.

* bf/fetch-set-head-fix:
  fetch set_head: fix non-mirror remotes in bare repositories
  fetch set_head: refactor to use remote directly
This commit is contained in:
Junio C Hamano
2025-02-14 17:53:48 -08:00
parent 09e74b06ea 93dc16483a
commit c3fffcfe8e
3 changed files with 39 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
builtin/fetch.c
View File

@ -1617,13 +1617,13 @@ static void report_set_head(const char *remote, const char *head_name,
strbuf_release(&buf_prefix);
}
static int set_head(const struct ref *remote_refs, int follow_remote_head,
const char *no_warn_branch)
static int set_head(const struct ref *remote_refs, struct remote *remote)
{
int result = 0, create_only, is_bare, was_detached;
int result = 0, create_only, baremirror, was_detached;
struct strbuf b_head = STRBUF_INIT, b_remote_head = STRBUF_INIT,
b_local_head = STRBUF_INIT;
const char *remote = gtransport->remote->name;
int follow_remote_head = remote->follow_remote_head;
const char *no_warn_branch = remote->no_warn_branch;
char *head_name = NULL;
struct ref *ref, *matches;
struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
@ -1655,17 +1655,17 @@ static int set_head(const struct ref *remote_refs, int follow_remote_head,
if (!head_name)
goto cleanup;
is_bare = is_bare_repository();
create_only = follow_remote_head == FOLLOW_REMOTE_ALWAYS ? 0 : !is_bare;
if (is_bare) {
baremirror = is_bare_repository() && remote->mirror;
create_only = follow_remote_head == FOLLOW_REMOTE_ALWAYS ? 0 : !baremirror;
if (baremirror) {
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);
strbuf_addf(&b_head, "refs/remotes/%s/HEAD", remote->name);
strbuf_addf(&b_remote_head, "refs/remotes/%s/%s", remote->name, head_name);
}
/* make sure it's valid */
if (!is_bare && !refs_ref_exists(refs, b_remote_head.buf)) {
if (!baremirror && !refs_ref_exists(refs, b_remote_head.buf)) {
result = 1;
goto cleanup;
}
@ -1678,7 +1678,7 @@ static int set_head(const struct ref *remote_refs, int follow_remote_head,
if (verbosity >= 0 &&
follow_remote_head == FOLLOW_REMOTE_WARN &&
(!no_warn_branch || strcmp(no_warn_branch, head_name)))
report_set_head(remote, head_name, &b_local_head, was_detached);
report_set_head(remote->name, head_name, &b_local_head, was_detached);
cleanup:
free(head_name);
@ -1924,8 +1924,7 @@ static int do_fetch(struct transport *transport,
"you need to specify exactly one branch with the --set-upstream option"));
}
}
if (set_head(remote_refs, transport->remote->follow_remote_head,
transport->remote->no_warn_branch))
if (set_head(remote_refs, transport->remote))
;
/*
* Way too many cases where this can go wrong

10
t/t5505-remote.sh
View File

@ -589,6 +589,16 @@ test_expect_success 'add --mirror setting HEAD' '
)
'
test_expect_success 'non-mirror fetch does not interfere with mirror' '
test_when_finished rm -rf headnotmain &&
(
git init --bare -b notmain headnotmain &&
cd headnotmain &&
git remote add -f other ../two &&
test "$(git symbolic-ref HEAD)" = "refs/heads/notmain"
)
'
test_expect_success 'add --mirror=fetch' '
mkdir mirror-fetch &&
git init -b main mirror-fetch/parent &&

17
t/t5510-fetch.sh
View File

@ -81,6 +81,23 @@ test_expect_success "fetch test remote HEAD" '
branch=$(git rev-parse refs/remotes/origin/main) &&
test "z$head" = "z$branch"'
test_expect_success "fetch test remote HEAD in bare repository" '
test_when_finished rm -rf barerepo &&
(
cd "$D" &&
git init --bare barerepo &&
cd barerepo &&
git remote add upstream ../two &&
git fetch upstream &&
git rev-parse --verify refs/remotes/upstream/HEAD &&
git rev-parse --verify refs/remotes/upstream/main &&
head=$(git rev-parse refs/remotes/upstream/HEAD) &&
branch=$(git rev-parse refs/remotes/upstream/main) &&
test "z$head" = "z$branch"
)
'
test_expect_success "fetch test remote HEAD change" '
cd "$D" &&
cd two &&