$ git clone -n https://gitee.com/src-opencloudos-rpms/gdm /var/lib/mock/dist-oc9-build-66755-17137/root/chroot_tmpdir/scmroot/gdm
Cloning into '/var/lib/mock/dist-oc9-build-66755-17137/root/chroot_tmpdir/scmroot/gdm'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/gdm
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5b2850e rebrand gdm 41.3-6.tl4.1 for OpenCloudOS