$ git clone -n https://gitee.com/wency_cn/python-tornado_1766735787.git /var/lib/mock/dist-an23-build-501266-74764/root/chroot_tmpdir/scmroot/python-tornado_1766735787
Cloning into '/var/lib/mock/dist-an23-build-501266-74764/root/chroot_tmpdir/scmroot/python-tornado_1766735787'...
$ git fetch origin 87d4a4017e3fb7085c92fb2aba03bb9450b99517:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/python-tornado_1766735787
 * [new ref]         87d4a4017e3fb7085c92fb2aba03bb9450b99517 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 87d4a40 Update code from upstream