$ git clone -n https://gitee.com/src-opencloudos-rpms/gnome-session.git /var/lib/mock/dist-oc9-build-127392-76695/root/chroot_tmpdir/scmroot/gnome-session
Cloning into '/var/lib/mock/dist-oc9-build-127392-76695/root/chroot_tmpdir/scmroot/gnome-session'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/gnome-session
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b69d7d8 import gnome-session-43.0-6.tl4