$ git clone -n https://src.fedoraproject.org/rpms/checkpointctl.git /var/lib/mock/f45-build-3866-327/root/chroot_tmpdir/scmroot/checkpointctl
Cloning into '/var/lib/mock/f45-build-3866-327/root/chroot_tmpdir/scmroot/checkpointctl'...
$ git fetch origin 292affc9af794f15ec01e8a210ce80dd509c2751:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/checkpointctl
 * [new ref]         292affc9af794f15ec01e8a210ce80dd509c2751 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 292affc Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild