clone: --branch=<branch> always means refs/heads/<branch>

It does not make sense to look outside refs/heads for HEAD's target
(src_ref_prefix can be set to "refs/" if --mirror is used) because ref
code only allows symref in form refs/heads/...

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/clone.c b/builtin/clone.c
index a1fbb3b90c0091084c657fc520f6adf6d8cd51f5..253a7946ce4c82a4021565e49fed39befbd82192 100644 (file)
--- a/builtin/clone.c
+++ b/builtin/clone.c
@@ -48,7 +48,6 @@ static int option_verbosity;
 static int option_progress;
 static struct string_list option_config;
 static struct string_list option_reference;
-static const char *src_ref_prefix = "refs/heads/";
 
 static int opt_parse_reference(const struct option *opt, const char *arg, int unset)
 {
@@ -413,6 +412,17 @@ static void remove_junk_on_signal(int signo)
        raise(signo);
 }
 
+static struct ref *find_remote_branch(const struct ref *refs, const char *branch)
+{
+       struct ref *ref;
+       struct strbuf head = STRBUF_INIT;
+       strbuf_addstr(&head, "refs/heads/");
+       strbuf_addstr(&head, branch);
+       ref = find_ref_by_name(refs, head.buf);
+       strbuf_release(&head);
+       return ref;
+}
+
 static struct ref *wanted_peer_refs(const struct ref *refs,
                struct refspec *refspec)
 {
@@ -425,13 +435,8 @@ static struct ref *wanted_peer_refs(const struct ref *refs,
 
                if (!option_branch)
                        remote_head = guess_remote_head(head, refs, 0);
-               else {
-                       struct strbuf sb = STRBUF_INIT;
-                       strbuf_addstr(&sb, src_ref_prefix);
-                       strbuf_addstr(&sb, option_branch);
-                       remote_head = find_ref_by_name(refs, sb.buf);
-                       strbuf_release(&sb);
-               }
+               else
+                       remote_head = find_remote_branch(refs, option_branch);
 
                if (!remote_head && option_branch)
                        warning(_("Could not find remote branch %s to clone."),
@@ -502,7 +507,7 @@ static void update_remote_refs(const struct ref *refs,
 static void update_head(const struct ref *our, const struct ref *remote,
                        const char *msg)
 {
-       if (our) {
+       if (our && !prefixcmp(our->name, "refs/heads/")) {
                /* Local default branch link */
                create_symref("HEAD", our->name, NULL);
                if (!option_bare) {
@@ -609,6 +614,7 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
        struct strbuf key = STRBUF_INIT, value = STRBUF_INIT;
        struct strbuf branch_top = STRBUF_INIT, reflog_msg = STRBUF_INIT;
        struct transport *transport = NULL;
+       const char *src_ref_prefix = "refs/heads/";
        struct remote *remote;
        int err = 0;
 
@@ -807,12 +813,8 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
                        guess_remote_head(remote_head, mapped_refs, 0);
 
                if (option_branch) {
-                       struct strbuf head = STRBUF_INIT;
-                       strbuf_addstr(&head, src_ref_prefix);
-                       strbuf_addstr(&head, option_branch);
                        our_head_points_at =
-                               find_ref_by_name(mapped_refs, head.buf);
-                       strbuf_release(&head);
+                               find_remote_branch(mapped_refs, option_branch);
 
                        if (!our_head_points_at) {
                                warning(_("Remote branch %s not found in "