Merge branch 'jj/stash-reset-only-toplevel'

"git stash save" lost local changes to submodules, which has been
corrected.

* jj/stash-reset-only-toplevel:
  stash: avoid recursive hard reset on submodules

builtin/stash.c

@@ -1392,7 +1392,7 @@ static int do_push_stash(const struct pathspec *ps, const char *stash_msg, int q
 			struct child_process cp = CHILD_PROCESS_INIT;
 			cp.git_cmd = 1;
 			argv_array_pushl(&cp.args, "reset", "--hard", "-q",
-					 NULL);
+					 "--no-recurse-submodules", NULL);
 			if (run_command(&cp)) {
 				ret = -1;
 				goto done;