$ git clone -n https://src.fedoraproject.org/rpms/obs-service-tar_scm.git /var/lib/mock/f38-build-side-42-init-devel-1046253-29762/root/chroot_tmpdir/scmroot/obs-service-tar_scm
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1046253-29762/root/chroot_tmpdir/scmroot/obs-service-tar_scm'...
$ git fetch origin 001cf0ff2d51af31edfdcd11069f194467128af6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/obs-service-tar_scm
 * [new ref]         001cf0ff2d51af31edfdcd11069f194467128af6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 001cf0f Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild