$ git clone -n https://gitee.com/YangengLiu/python-tornado.git /var/lib/mock/dist-an23-build-488691-74434/root/chroot_tmpdir/scmroot/python-tornado
Cloning into '/var/lib/mock/dist-an23-build-488691-74434/root/chroot_tmpdir/scmroot/python-tornado'...
$ git fetch origin 62babfe89a0cc2de0ca01bec993dfd5b3d31e042:KOJI_FETCH_HEAD
From https://gitee.com/YangengLiu/python-tornado
 * [new ref]         62babfe89a0cc2de0ca01bec993dfd5b3d31e042 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 62babfe update version to 6.5.2