$ git clone -n https://gitee.com/src-opencloudos-rpms/postgres-decoderbufs.git /var/lib/mock/dist-oc9-build-59291-16463/root/chroot_tmpdir/scmroot/postgres-decoderbufs
Cloning into '/var/lib/mock/dist-oc9-build-59291-16463/root/chroot_tmpdir/scmroot/postgres-decoderbufs'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/postgres-decoderbufs
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4f06891 import postgres-decoderbufs-1.9.7-2.tl4