$ git clone -n https://src.fedoraproject.org/rpms/libpreludedb.git /var/lib/mock/f41-build-side-1-3137968-39809/root/chroot_tmpdir/scmroot/libpreludedb
Cloning into '/var/lib/mock/f41-build-side-1-3137968-39809/root/chroot_tmpdir/scmroot/libpreludedb'...
$ git fetch origin 153db8d985c26ae42208fb8b8721e22692006460:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libpreludedb
 * [new ref]         153db8d985c26ae42208fb8b8721e22692006460 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 153db8d Retired: https://pagure.io/releng/issue/12278