tag: allow lookup_tag to handle arbitrary repositories

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/tag.c b/tag.c
index fbb4659..46b5882 100644
--- a/tag.c
+++ b/tag.c
@@ -92,13 +92,13 @@ struct object *deref_tag_noverify(struct object *o)
 	return o;
 }
 
-struct tag *lookup_tag_the_repository(const struct object_id *oid)
+struct tag *lookup_tag(struct repository *r, const struct object_id *oid)
 {
-	struct object *obj = lookup_object(the_repository, oid->hash);
+	struct object *obj = lookup_object(r, oid->hash);
 	if (!obj)
-		return create_object(the_repository, oid->hash,
-				     alloc_tag_node(the_repository));
-	return object_as_type(the_repository, obj, OBJ_TAG, 0);
+		return create_object(r, oid->hash,
+				     alloc_tag_node(r));
+	return object_as_type(r, obj, OBJ_TAG, 0);
 }
 
 static timestamp_t parse_tag_date(const char *buf, const char *tail)