$ git clone -n https://gitee.com/opencloudos-stream/selinux-policy.git /var/lib/mock/dist-ocs23-build-90073-5816/root/chroot_tmpdir/scmroot/selinux-policy
Cloning into '/var/lib/mock/dist-ocs23-build-90073-5816/root/chroot_tmpdir/scmroot/selinux-policy'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/selinux-policy
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e9980fd !2 Upgrade to version 38.28 Merge pull request !2 from gordonwwang/master