$ git clone -n https://src.fedoraproject.org/rpms/R-FMStable.git /var/lib/mock/f41-build-820839-152366/root/chroot_tmpdir/scmroot/R-FMStable
Cloning into '/var/lib/mock/f41-build-820839-152366/root/chroot_tmpdir/scmroot/R-FMStable'...
$ git fetch origin 02dc1747248f16b346dd238fd2ade381d79d1dce:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-FMStable
 * [new ref]         02dc1747248f16b346dd238fd2ade381d79d1dce -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 02dc174 Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild