$ git clone -n https://src.fedoraproject.org/rpms/arprec.git /var/lib/mock/f45-build-46817-861/root/chroot_tmpdir/scmroot/arprec
Cloning into '/var/lib/mock/f45-build-46817-861/root/chroot_tmpdir/scmroot/arprec'...
$ git fetch origin 57ed07bbc286523ebeafa505960b224fd9fbd1bc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/arprec
 * [new ref]         57ed07bbc286523ebeafa505960b224fd9fbd1bc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 57ed07b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild