$ git clone -n https://src.fedoraproject.org/rpms/pari.git /var/lib/mock/f45-build-21374-584/root/chroot_tmpdir/scmroot/pari
Cloning into '/var/lib/mock/f45-build-21374-584/root/chroot_tmpdir/scmroot/pari'...
$ git fetch origin 6f304e5c7baaf30fdc919af34a23a3f463f5b3ba:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pari
 * [new ref]         6f304e5c7baaf30fdc919af34a23a3f463f5b3ba -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6f304e5 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild