$ git clone -n https://gitee.com/src-anolis-os/docker.git /var/lib/mock/dist-an7-extras-build-73840-38498/root/chroot_tmpdir/scmroot/docker
Cloning into '/var/lib/mock/dist-an7-extras-build-73840-38498/root/chroot_tmpdir/scmroot/docker'...
$ git reset --hard origin/a7-extras
HEAD is now at 3a32f36 update to docker-1.13.1-209.git7d71120.el7_9