$ git clone -n https://src.fedoraproject.org/rpms/python-pyunicorn.git /var/lib/mock/f41-build-side-1-2937435-35277/root/chroot_tmpdir/scmroot/python-pyunicorn
Cloning into '/var/lib/mock/f41-build-side-1-2937435-35277/root/chroot_tmpdir/scmroot/python-pyunicorn'...
$ git fetch origin e3d7c749969b807e17912d2ae2bf69dfbbc62e5f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-pyunicorn
 * [new ref]         e3d7c749969b807e17912d2ae2bf69dfbbc62e5f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e3d7c74 convert license to SPDX