$ git clone -n https://src.fedoraproject.org/rpms/cvs2cl.git /var/lib/mock/f41-build-side-1-2633714-25954/root/chroot_tmpdir/scmroot/cvs2cl
Cloning into '/var/lib/mock/f41-build-side-1-2633714-25954/root/chroot_tmpdir/scmroot/cvs2cl'...
$ git fetch origin 64b5e2c397d0477593b91649287746366ab12938:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cvs2cl
 * [new ref]         64b5e2c397d0477593b91649287746366ab12938 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 64b5e2c convert GPLv2+ license to SPDX