$ git clone -n https://src.fedoraproject.org/rpms/golang-github-tonistiigi-archvariant.git /var/lib/mock/f38-build-729727-101836/root/chroot_tmpdir/scmroot/golang-github-tonistiigi-archvariant
Cloning into '/var/lib/mock/f38-build-729727-101836/root/chroot_tmpdir/scmroot/golang-github-tonistiigi-archvariant'...
$ git fetch origin 979222f807dd49a7e46952cd2add08607ba01c69:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-tonistiigi-archvariant
 * [new ref]         979222f807dd49a7e46952cd2add08607ba01c69 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 979222f Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild