$ git clone -n https://src.fedoraproject.org/rpms/R-R.oo.git /var/lib/mock/f40-build-2638783-66326/root/chroot_tmpdir/scmroot/R-R.oo
Cloning into '/var/lib/mock/f40-build-2638783-66326/root/chroot_tmpdir/scmroot/R-R.oo'...
$ git fetch origin 7604bd5ea03a148e1c9b30cf94cfdd67dddc2c04:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-R.oo
 * [new ref]         7604bd5ea03a148e1c9b30cf94cfdd67dddc2c04 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7604bd5 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild