$ git clone -n https://gitee.com/src-opencloudos-rpms/python-tornado.git /var/lib/mock/dist-oc9-build-251092-84070/root/chroot_tmpdir/scmroot/python-tornado
Cloning into '/var/lib/mock/dist-oc9-build-251092-84070/root/chroot_tmpdir/scmroot/python-tornado'...
$ git fetch origin c52aea41ee0221fb803c1b70e2313e058a90fe1b:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/python-tornado
 * [new ref]         c52aea41ee0221fb803c1b70e2313e058a90fe1b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c52aea4 import python-tornado-6.3.3-11.tl4