$ git clone -n https://gitee.com/YangengLiu/python-tornado.git /var/lib/mock/dist-an23-build-488826-74446/root/chroot_tmpdir/scmroot/python-tornado
Cloning into '/var/lib/mock/dist-an23-build-488826-74446/root/chroot_tmpdir/scmroot/python-tornado'...
$ git fetch origin fe51ca8cc292431af06ec0cef0d58f9337d4d2dc:KOJI_FETCH_HEAD
From https://gitee.com/YangengLiu/python-tornado
 * [new ref]         fe51ca8cc292431af06ec0cef0d58f9337d4d2dc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fe51ca8 update version to 6.5.2