1 files changed, 38 insertions, 10 deletions

diff --git a/transport.c b/transport.c
index c87147046..48864b3a9 100644
--- a/transport.c
+++ b/transport.c
@@ -1206,6 +1206,42 @@ literal_copy:
 	return xstrdup(url);
 }
 
+static void read_alternate_refs(const char *path,
+				alternate_ref_fn *cb,
+				void *data)
+{
+	struct child_process cmd = CHILD_PROCESS_INIT;
+	struct strbuf line = STRBUF_INIT;
+	FILE *fh;
+
+	cmd.git_cmd = 1;
+	argv_array_pushf(&cmd.args, "--git-dir=%s", path);
+	argv_array_push(&cmd.args, "for-each-ref");
+	argv_array_push(&cmd.args, "--format=%(objectname) %(refname)");
+	cmd.env = local_repo_env;
+	cmd.out = -1;
+
+	if (start_command(&cmd))
+		return;
+
+	fh = xfdopen(cmd.out, "r");
+	while (strbuf_getline_lf(&line, fh) != EOF) {
+		struct object_id oid;
+
+		if (get_oid_hex(line.buf, &oid) ||
+		    line.buf[GIT_SHA1_HEXSZ] != ' ') {
+			warning("invalid line while parsing alternate refs: %s",
+				line.buf);
+			break;
+		}
+
+		cb(line.buf + GIT_SHA1_HEXSZ + 1, &oid, data);
+	}
+
+	fclose(fh);
+	finish_command(&cmd);
+}
+
 struct alternate_refs_data {
 	alternate_ref_fn *fn;
 	void *data;
@@ -1216,9 +1252,6 @@ static int refs_from_alternate_cb(struct alternate_object_database *e,
 {
 	struct strbuf path = STRBUF_INIT;
 	size_t base_len;
-	struct remote *remote;
-	struct transport *transport;
-	const struct ref *extra;
 	struct alternate_refs_data *cb = data;
 
 	if (!strbuf_realpath(&path, e->path, 0))
@@ -1233,13 +1266,8 @@ static int refs_from_alternate_cb(struct alternate_object_database *e,
 		goto out;
 	strbuf_setlen(&path, base_len);
 
-	remote = remote_get(path.buf);
-	transport = transport_get(remote, path.buf);
-	for (extra = transport_get_remote_refs(transport);
-	     extra;
-	     extra = extra->next)
-		cb->fn(extra->name, &extra->old_oid, cb->data);
-	transport_disconnect(transport);
+	read_alternate_refs(path.buf, cb->fn, cb->data);
+
 out:
 	strbuf_release(&path);
 	return 0;