$ git clone -n https://src.fedoraproject.org/rpms/lightning.git /var/lib/mock/f40-build-796331-140594/root/chroot_tmpdir/scmroot/lightning
Cloning into '/var/lib/mock/f40-build-796331-140594/root/chroot_tmpdir/scmroot/lightning'...
$ git fetch origin 96cb68ec08e6986060b81334a223ceb1cb65b73f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lightning
 * [new ref]         96cb68ec08e6986060b81334a223ceb1cb65b73f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 96cb68e Update for tiny library bump