$ git clone -n https://gitee.com/src-opencloudos-rpms/selinux-policy.git /var/lib/mock/dist-oc9-build-49494-14595/root/chroot_tmpdir/scmroot/selinux-policy
Cloning into '/var/lib/mock/dist-oc9-build-49494-14595/root/chroot_tmpdir/scmroot/selinux-policy'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/selinux-policy
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 63f9408 import selinux-policy-38.6-3.tl4