$ git clone -n https://gitee.com/src-opencloudos-rpms/opencv.git /var/lib/mock/dist-oc9-epol-build-55895-14787/root/chroot_tmpdir/scmroot/opencv
Cloning into '/var/lib/mock/dist-oc9-epol-build-55895-14787/root/chroot_tmpdir/scmroot/opencv'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/opencv
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d0d342a import opencv-4.7.0-2.tl4