$ git clone -n https://src.fedoraproject.org/rpms/R-farver.git /var/lib/mock/f40-build-789379-135728/root/chroot_tmpdir/scmroot/R-farver
Cloning into '/var/lib/mock/f40-build-789379-135728/root/chroot_tmpdir/scmroot/R-farver'...
$ git fetch origin 00f3255b2f7afd432d4c8ae57dda4dbcebc25c5a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-farver
 * [new ref]         00f3255b2f7afd432d4c8ae57dda4dbcebc25c5a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 00f3255 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild