$ git clone -n https://gitee.com/opencloudos-stream/nordugrid-arc.git /var/lib/mock/dist-oc9-epol-build-109186-67354/root/chroot_tmpdir/scmroot/nordugrid-arc
Cloning into '/var/lib/mock/dist-oc9-epol-build-109186-67354/root/chroot_tmpdir/scmroot/nordugrid-arc'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/nordugrid-arc
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aa41a32 update