$ git clone -n https://src.fedoraproject.org/rpms/python-jupyter-client.git /var/lib/mock/f41-build-762733-13458/root/chroot_tmpdir/scmroot/python-jupyter-client
Cloning into '/var/lib/mock/f41-build-762733-13458/root/chroot_tmpdir/scmroot/python-jupyter-client'...
$ git fetch origin 0f634eb03fd174749ff17016c3b4109789cf7c21:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-jupyter-client
 * [new ref]         0f634eb03fd174749ff17016c3b4109789cf7c21 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0f634eb Convert to %autorelease and %autochangelog