had_error = 1;
                        continue;
                }
-               if (!resolve_ref(ref, sha1, 1, NULL)) {
+               if (read_ref(ref, sha1)) {
                        error("replace ref '%s' not found.", *p);
                        had_error = 1;
                        continue;
        if (check_refname_format(ref, 0))
                die("'%s' is not a valid ref name.", ref);
 
-       if (!resolve_ref(ref, prev, 1, NULL))
+       if (read_ref(ref, prev))
                hashclr(prev);
        else if (!force)
                die("replace ref '%s' already exists", ref);