$ git clone -n https://src.fedoraproject.org/rpms/python-pyjwkest.git /var/lib/mock/f38-build-side-42-init-devel-823920-28358/root/chroot_tmpdir/scmroot/python-pyjwkest
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-823920-28358/root/chroot_tmpdir/scmroot/python-pyjwkest'...
$ git fetch origin c54dd07ca8bcf84bab8df812c9280816b1ba2c3d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-pyjwkest
 * [new ref]         c54dd07ca8bcf84bab8df812c9280816b1ba2c3d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c54dd07 init package