$ git clone -n https://src.fedoraproject.org/rpms/v4l2ucp.git /var/lib/mock/f41-build-side-1-2778945-32451/root/chroot_tmpdir/scmroot/v4l2ucp
Cloning into '/var/lib/mock/f41-build-side-1-2778945-32451/root/chroot_tmpdir/scmroot/v4l2ucp'...
$ git fetch origin 37aedcb15212c5049287cbf6d7a4cf4899f9c7ff:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/v4l2ucp
 * [new ref]         37aedcb15212c5049287cbf6d7a4cf4899f9c7ff -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 37aedcb convert GPLv2+ license to SPDX