$ git clone -n https://gitee.com/opencloudos-stream/crontabs.git /var/lib/mock/dist-ocs23-build-23616-1191/root/chroot_tmpdir/scmroot/crontabs
Cloning into '/var/lib/mock/dist-ocs23-build-23616-1191/root/chroot_tmpdir/scmroot/crontabs'...
$ git fetch origin HEAD:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/crontabs
 * [new ref]                    -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c8a2d85 update