$ git clone -n https://src.fedoraproject.org/rpms/python-jupyter-server.git /var/lib/mock/f40-build-2203629-51930/root/chroot_tmpdir/scmroot/python-jupyter-server
Cloning into '/var/lib/mock/f40-build-2203629-51930/root/chroot_tmpdir/scmroot/python-jupyter-server'...
$ git fetch origin 8af2235aa38cf7a814f82c218c25cda12b7c6be9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-jupyter-server
 * [new ref]         8af2235aa38cf7a814f82c218c25cda12b7c6be9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8af2235 Update to 2.12.2 (rhbz#2256714)