$ git clone -n https://src.fedoraproject.org/rpms/libnetfilter_cthelper.git /var/lib/mock/f40-build-2007937-45315/root/chroot_tmpdir/scmroot/libnetfilter_cthelper
Cloning into '/var/lib/mock/f40-build-2007937-45315/root/chroot_tmpdir/scmroot/libnetfilter_cthelper'...
$ git fetch origin 026791c82ad21f8741c2d0a2dc97d7f67ae6f92f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libnetfilter_cthelper
 * [new ref]         026791c82ad21f8741c2d0a2dc97d7f67ae6f92f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 026791c Convert license to SPDX format