$ git clone -n https://src.fedoraproject.org/rpms/python-papermill.git /var/lib/mock/f40-build-2688095-68099/root/chroot_tmpdir/scmroot/python-papermill
Cloning into '/var/lib/mock/f40-build-2688095-68099/root/chroot_tmpdir/scmroot/python-papermill'...
$ git fetch origin ee3d66e951cd5477a7e5b3cdbb143f0e49c2cc12:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-papermill
 * [new ref]         ee3d66e951cd5477a7e5b3cdbb143f0e49c2cc12 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ee3d66e Add Packit config