$ git clone -n https://src.fedoraproject.org/rpms/python-jupyter-server-fileid.git /var/lib/mock/f38-build-side-42-init-devel-688693-26781/root/chroot_tmpdir/scmroot/python-jupyter-server-fileid
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-688693-26781/root/chroot_tmpdir/scmroot/python-jupyter-server-fileid'...
$ git fetch origin 21059c036fe53e5452f6acd81e991369f86a3fa1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-jupyter-server-fileid
 * [new ref]         21059c036fe53e5452f6acd81e991369f86a3fa1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 21059c0 Update to 0.8.0 (rhbz#2173025)