{
        if (!get_sha1_hex(target, sha1))
                return 0;
-       if (!check_ref_format(target)) {
+       if (!check_refname_format(target, 0)) {
                struct ref *ref = alloc_ref(target);
                if (!walker->fetch_ref(walker, ref)) {
                        hashcpy(sha1, ref->old_sha1);
        struct commit *commit = lookup_commit_reference_gently(sha1, 1);
        if (commit) {
                commit->object.flags |= COMPLETE;
-               insert_by_date(commit, &complete);
+               commit_list_insert_by_date(commit, &complete);
        }
        return 0;
 }