$ git clone -n https://src.fedoraproject.org/rpms/kanatest.git /var/lib/mock/f38-build-side-42-init-devel-645344-26400/root/chroot_tmpdir/scmroot/kanatest
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-645344-26400/root/chroot_tmpdir/scmroot/kanatest'...
$ git fetch origin 786841cf734f4a7bb9d53cb4ed2411ff3b7fa1a7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kanatest
 * [new ref]         786841cf734f4a7bb9d53cb4ed2411ff3b7fa1a7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 786841c Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild