$ git clone -n https://gitee.com/wency_cn/python-tornado.git /var/lib/mock/dist-an23-build-500009-74764/root/chroot_tmpdir/scmroot/python-tornado
Cloning into '/var/lib/mock/dist-an23-build-500009-74764/root/chroot_tmpdir/scmroot/python-tornado'...
$ git fetch origin 0a28aa082d1c0cdadb328c6619f9bd4fec3bc12a:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/python-tornado
 * [new ref]         0a28aa082d1c0cdadb328c6619f9bd4fec3bc12a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0a28aa0 Update code from upstream