$ git clone -n https://src.fedoraproject.org/rpms/R-quantities.git /var/lib/mock/f40-build-2169089-50976/root/chroot_tmpdir/scmroot/R-quantities
Cloning into '/var/lib/mock/f40-build-2169089-50976/root/chroot_tmpdir/scmroot/R-quantities'...
$ git fetch origin 2d710c3916ee896b57b389391d21de94fa6c443b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-quantities
 * [new ref]         2d710c3916ee896b57b389391d21de94fa6c443b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2d710c3 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild