$ git clone -n https://gitee.com/wanghuan158/ipython.git /var/lib/mock/dist-an23-build-440894-73156/root/chroot_tmpdir/scmroot/ipython
Cloning into '/var/lib/mock/dist-an23-build-440894-73156/root/chroot_tmpdir/scmroot/ipython'...
$ git fetch origin c93093c971780fe5a2bc810d9e8da71c81ac07f5:KOJI_FETCH_HEAD
From https://gitee.com/wanghuan158/ipython
 * [new ref]         c93093c971780fe5a2bc810d9e8da71c81ac07f5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c93093c Rebuild with python-tornado