$ git clone -n https://gitee.com/src-opencloudos-rpms/selinux-policy.git /var/lib/mock/dist-oc9-build-58451-16463/root/chroot_tmpdir/scmroot/selinux-policy
Cloning into '/var/lib/mock/dist-oc9-build-58451-16463/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 de67439 import selinux-policy-38.28-1.1.tl4.1