$ git clone -n https://gitee.com/opencloudos-stream/ecj.git /var/lib/mock/dist-ocs23-build-23823-1191/root/chroot_tmpdir/scmroot/ecj
Cloning into '/var/lib/mock/dist-ocs23-build-23823-1191/root/chroot_tmpdir/scmroot/ecj'...
$ git fetch origin HEAD:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/ecj
 * [new ref]                    -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bc94d9d OCS package init