$ whoami
root
$ git clone -n http://8.131.229.236/anolis-os/opencv /var/lib/mock/dist-el8-build-6435-108/root/chroot_tmpdir/scmroot/opencv
Cloning into '/var/lib/mock/dist-el8-build-6435-108/root/chroot_tmpdir/scmroot/opencv'...
$ git reset --hard origin/a8
HEAD is now at 688524b import opencv-3.4.6-5.el8.src.rpm