remote: let guess_remote_head() optionally return all matches

Determining HEAD is ambiguous since it is done by comparing SHA1s.

In the case of multiple matches we return refs/heads/master if it
matches, else we return the first match we encounter. builtin-remote
needs all matches returned to it, so add a flag for it to request such.

To be simple and consistent, the return value is now a copy (including
peer_ref) of the matching refs.

Originally contributed by Jeff King along with the prior commit as a
single patch.

Signed-off-by: Jay Soffian <jaysoffian@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/builtin-clone.c b/builtin-clone.c
index f9ce4fbf1..3146ca87f 100644
--- a/builtin-clone.c
+++ b/builtin-clone.c
@@ -510,7 +510,7 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
 		mapped_refs = write_remote_refs(refs, &refspec, reflog_msg.buf);
 
 		remote_head = find_ref_by_name(refs, "HEAD");
-		head_points_at = guess_remote_head(remote_head, mapped_refs);
+		head_points_at = guess_remote_head(remote_head, mapped_refs, 0);
 	}
 	else {
 		warning("You appear to have cloned an empty repository.");