$ git clone -n https://gitee.com/src-opencloudos-rpms/crontabs.git /var/lib/mock/dist-oc9-build-40892-14591/root/chroot_tmpdir/scmroot/crontabs
Cloning into '/var/lib/mock/dist-oc9-build-40892-14591/root/chroot_tmpdir/scmroot/crontabs'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/crontabs
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 588de05 import crontabs-1.11-4.tl4