1 files changed, 1 insertions, 1 deletions
diff --git a/tag.h b/tag.h
index 2abb372..fdfcb4a 100644
--- a/tag.h
+++ b/tag.h
@@ -12,7 +12,7 @@ struct tag {
 	timestamp_t date;
 };
 
-extern struct tag *lookup_tag(const unsigned char *sha1);
+extern struct tag *lookup_tag(const struct object_id *oid);
 extern int parse_tag_buffer(struct tag *item, const void *data, unsigned long size);
 extern int parse_tag(struct tag *item);
 extern struct object *deref_tag(struct object *, const char *, int);