$ git clone -n https://src.fedoraproject.org/rpms/golang-github-miekg-mmark.git /var/lib/mock/f38-build-side-42-init-devel-634783-26382/root/chroot_tmpdir/scmroot/golang-github-miekg-mmark
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-634783-26382/root/chroot_tmpdir/scmroot/golang-github-miekg-mmark'...
$ git fetch origin 6d0c230968eb8409aa3d6e977fb5de466c092af7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-miekg-mmark
 * [new ref]         6d0c230968eb8409aa3d6e977fb5de466c092af7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6d0c230 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild