Always use the current connection's remote ref list in git protocol

We always report to the user the list of refs we got from the first
connection, even if we do multiple connections. But we should always
use each connection's own list of refs in the communication with the
server, in case we got a different server out of DNS rotation or the
timing was surprising or something.

Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

transport.c

@@ -622,6 +622,7 @@ static int fetch_refs_via_pack(struct transport *transport,
 	char *dest = xstrdup(transport->url);
 	struct fetch_pack_args args;
 	int i;
+	struct ref *refs_tmp = NULL;
 
 	memset(&args, 0, sizeof(args));
 	args.uploadpack = data->uploadpack;
@@ -634,22 +635,22 @@ static int fetch_refs_via_pack(struct transport *transport,
 	for (i = 0; i < nr_heads; i++)
 		origh[i] = heads[i] = xstrdup(to_fetch[i]->name);
 
-	refs = transport_get_remote_refs(transport);
 	if (!data->conn) {
-		struct ref *refs_tmp;
 		connect_setup(transport);
 		get_remote_heads(data->fd[0], &refs_tmp, 0, NULL, 0);
-		free_refs(refs_tmp);
 	}
 
-	refs = fetch_pack(&args, data->fd, data->conn, transport->remote_refs,
+	refs = fetch_pack(&args, data->fd, data->conn,
+			  refs_tmp ? refs_tmp : transport->remote_refs,
 			  dest, nr_heads, heads, &transport->pack_lockfile);
 	close(data->fd[0]);
 	close(data->fd[1]);
 	if (finish_connect(data->conn))
 		refs = NULL;
 	data->conn = NULL;
 
+	free_refs(refs_tmp);
+
 	for (i = 0; i < nr_heads; i++)
 		free(origh[i]);
 	free(origh);