$ git clone -n https://src.fedoraproject.org/rpms/golang-github-yudai-gojsondiff.git /var/lib/mock/f38-build-side-42-init-devel-676357-26688/root/chroot_tmpdir/scmroot/golang-github-yudai-gojsondiff
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-676357-26688/root/chroot_tmpdir/scmroot/golang-github-yudai-gojsondiff'...
$ git fetch origin ec1946be96ecf531417a392309213ebe91912e4a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-yudai-gojsondiff
 * [new ref]         ec1946be96ecf531417a392309213ebe91912e4a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ec1946b Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild