commit - e65e3e2fec796e425b0156322a8f6d06370b8e38
commit + 4db73312461926de42eaa2bcc0758afa90f08b90
blob - 80a7adc6bc2690d44ca7c113d7f7169ecbf616d0
blob + 9c12562b41d068594598dd7102873581f5264862
--- lib/blame.c
+++ lib/blame.c
@@ -334,6 +334,7 @@ blame_open(struct got_blame **blamep, const char *path
 	}
 
 	/* Loop over first-parent history and try to blame commits. */
+	/* TODO: Iterate commits via commit graph instead. */
 	err = got_object_open_as_commit(&commit, repo, start_commit_id);
 	if (err)
 		goto done;