$ git clone -n https://src.fedoraproject.org/rpms/R-sciplot /var/lib/mock/f39-build-1584570-38137/root/chroot_tmpdir/scmroot/R-sciplot
Cloning into '/var/lib/mock/f39-build-1584570-38137/root/chroot_tmpdir/scmroot/R-sciplot'...
$ git fetch origin 7b0a0e7dca989d91b994835b84eb4fd248be1b6c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-sciplot
 * [new ref]         7b0a0e7dca989d91b994835b84eb4fd248be1b6c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7b0a0e7 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild