$ git clone -n https://src.fedoraproject.org/rpms/R-sys.git /var/lib/mock/f41-build-820994-152406/root/chroot_tmpdir/scmroot/R-sys
Cloning into '/var/lib/mock/f41-build-820994-152406/root/chroot_tmpdir/scmroot/R-sys'...
$ git fetch origin 3168ae9b9c9a3a811bdeb36eee9a11dafd6a1344:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-sys
 * [new ref]         3168ae9b9c9a3a811bdeb36eee9a11dafd6a1344 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3168ae9 Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild