$ git clone -n https://gitee.com/wanghuan158/jupyterlab.git /var/lib/mock/dist-an23-build-440810-73156/root/chroot_tmpdir/scmroot/jupyterlab
Cloning into '/var/lib/mock/dist-an23-build-440810-73156/root/chroot_tmpdir/scmroot/jupyterlab'...
$ git fetch origin a3226ed688f1fbfda2b4f0422d4859313f29734d:KOJI_FETCH_HEAD
From https://gitee.com/wanghuan158/jupyterlab
 * [new ref]         a3226ed688f1fbfda2b4f0422d4859313f29734d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a3226ed Rebuild with python-tornado