$ git clone -n https://gitee.com/opencloudos-stream/opencv.git /var/lib/mock/dist-ocs23-build-33863-1592/root/chroot_tmpdir/scmroot/opencv
Cloning into '/var/lib/mock/dist-ocs23-build-33863-1592/root/chroot_tmpdir/scmroot/opencv'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/opencv
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 56e4ab4 !4 Rebuilt for jasper-libs 4.0.0 Merge pull request !4 from cunshunxia/master