$ git clone -n https://src.fedoraproject.org/rpms/R-here.git /var/lib/mock/f40-build-2285238-55674/root/chroot_tmpdir/scmroot/R-here
Cloning into '/var/lib/mock/f40-build-2285238-55674/root/chroot_tmpdir/scmroot/R-here'...
$ git fetch origin 4596fcb46b097f0667af37058ccea04863bcec6e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-here
 * [new ref]         4596fcb46b097f0667af37058ccea04863bcec6e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4596fcb Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild