$ git clone -n https://src.fedoraproject.org/rpms/python-jupyterlab-server.git /var/lib/mock/f40-build-2148333-50889/root/chroot_tmpdir/scmroot/python-jupyterlab-server
Cloning into '/var/lib/mock/f40-build-2148333-50889/root/chroot_tmpdir/scmroot/python-jupyterlab-server'...
$ git fetch origin c248ccfcc2c0340946a312f173faad4b743ffdb2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-jupyterlab-server
 * [new ref]         c248ccfcc2c0340946a312f173faad4b743ffdb2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c248ccf Update to 2.24.0 (rhbz#2224993)