$ git clone -n https://gitee.com/zhuhong_bo/python-tornado.git /var/lib/mock/dist-an7-els-build-494660-73148/root/chroot_tmpdir/scmroot/python-tornado
Cloning into '/var/lib/mock/dist-an7-els-build-494660-73148/root/chroot_tmpdir/scmroot/python-tornado'...
$ git fetch origin aa5f97066694def2e96ee9a08a9d325072c57ceb:KOJI_FETCH_HEAD
From https://gitee.com/zhuhong_bo/python-tornado
 * [new ref]         aa5f97066694def2e96ee9a08a9d325072c57ceb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aa5f970 Rebuilding with ppc and s390 arches