$ git clone -n https://gitee.com/opencloudos-stream/xfce4-session.git /var/lib/mock/dist-oc9-epol-build-109665-67476/root/chroot_tmpdir/scmroot/xfce4-session
Cloning into '/var/lib/mock/dist-oc9-epol-build-109665-67476/root/chroot_tmpdir/scmroot/xfce4-session'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/xfce4-session
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fcb6c0d update