$ git clone -n git+ssh://git@codeup.openanolis.cn/codeup/anolis-os/mesa-demos.git /var/lib/mock/dist-an7-build-32335-15978/root/chroot_tmpdir/scmroot/mesa-demos
Cloning into '/var/lib/mock/dist-an7-build-32335-15978/root/chroot_tmpdir/scmroot/mesa-demos'...
$ git reset --hard origin/a7
HEAD is now at 8685959 import mesa-demos-8.3.0-10.el7.src.rpm