$ git clone -n https://src.fedoraproject.org/rpms/jupyterlab.git /var/lib/mock/f40-build-2075862-49518/root/chroot_tmpdir/scmroot/jupyterlab
Cloning into '/var/lib/mock/f40-build-2075862-49518/root/chroot_tmpdir/scmroot/jupyterlab'...
$ git fetch origin 9bb4302134af55e2817338da9728e57bdd565110:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jupyterlab
 * [new ref]         9bb4302134af55e2817338da9728e57bdd565110 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9bb4302 Update to 4.0.5 (rhbz#2231708)