$ git clone -n https://src.fedoraproject.org/rpms/mcrcon.git /var/lib/mock/f45-build-18164-510/root/chroot_tmpdir/scmroot/mcrcon
Cloning into '/var/lib/mock/f45-build-18164-510/root/chroot_tmpdir/scmroot/mcrcon'...
$ git fetch origin e8dae7c3dd66513ff5b3c3af2085cf9d8e8bcdc5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mcrcon
 * [new ref]         e8dae7c3dd66513ff5b3c3af2085cf9d8e8bcdc5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e8dae7c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild