$ git clone -n https://gitee.com/src-opencloudos-rpms/python-tornado.git /var/lib/mock/dist-oc9-build-253608-84314/root/chroot_tmpdir/scmroot/python-tornado
Cloning into '/var/lib/mock/dist-oc9-build-253608-84314/root/chroot_tmpdir/scmroot/python-tornado'...
$ git fetch origin f0fd82f7cbd791edb7689b6eac259d050215f73e:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/python-tornado
 * [new ref]         f0fd82f7cbd791edb7689b6eac259d050215f73e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f0fd82f import python-tornado-6.3.3-12.tl4