$ git clone -n https://src.fedoraproject.org/rpms/kf5-prison.git /var/lib/mock/f40-build-2165770-50976/root/chroot_tmpdir/scmroot/kf5-prison
Cloning into '/var/lib/mock/f40-build-2165770-50976/root/chroot_tmpdir/scmroot/kf5-prison'...
$ git fetch origin cc441dde47e6026e88c321c674e6eed813d21e59:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-prison
 * [new ref]         cc441dde47e6026e88c321c674e6eed813d21e59 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cc441dd 5.113.0