$ git clone -n https://gitee.com/opencloudos-stream/x2goserver.git /var/lib/mock/dist-oc9-epol-build-106979-66944/root/chroot_tmpdir/scmroot/x2goserver
Cloning into '/var/lib/mock/dist-oc9-epol-build-106979-66944/root/chroot_tmpdir/scmroot/x2goserver'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/x2goserver
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b739e38 update