$ git clone -n https://gitee.com/wanghuan158/python-ipykernel.git /var/lib/mock/dist-an23-build-440736-73155/root/chroot_tmpdir/scmroot/python-ipykernel
Cloning into '/var/lib/mock/dist-an23-build-440736-73155/root/chroot_tmpdir/scmroot/python-ipykernel'...
$ git fetch origin c9ca37bbb15570884d4a003ffc85e72a334e8d9d:KOJI_FETCH_HEAD
From https://gitee.com/wanghuan158/python-ipykernel
 * [new ref]         c9ca37bbb15570884d4a003ffc85e72a334e8d9d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c9ca37b rebuild with python-tornado