$ git clone -n https://gitee.com/src-opencloudos-rpms/realtime-tests.git /var/lib/mock/dist-oc9-build-51482-14595/root/chroot_tmpdir/scmroot/realtime-tests
Cloning into '/var/lib/mock/dist-oc9-build-51482-14595/root/chroot_tmpdir/scmroot/realtime-tests'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/realtime-tests
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 979c96a import realtime-tests-2.4-3.tl4