$ git clone -n https://src.fedoraproject.org/rpms/R-ini.git /var/lib/mock/f45-build-6168-346/root/chroot_tmpdir/scmroot/R-ini
Cloning into '/var/lib/mock/f45-build-6168-346/root/chroot_tmpdir/scmroot/R-ini'...
$ git fetch origin b35420c7c16bfd81a3c9f485661eae4481c8174a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-ini
 * [new ref]         b35420c7c16bfd81a3c9f485661eae4481c8174a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b35420c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild