$ git clone -n https://gitee.com/src-opencloudos-rpms/nginx /var/lib/mock/dist-oc9-donghua-build-123156-72789/root/chroot_tmpdir/scmroot/nginx
Cloning into '/var/lib/mock/dist-oc9-donghua-build-123156-72789/root/chroot_tmpdir/scmroot/nginx'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/nginx
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cb8efc1 import nginx-1.26.2-2.tl4.ap.1