$ git clone -n https://gitee.com/src-opencloudos-rpms/xxhash.git /var/lib/mock/dist-oc9-build-72353-47681/root/chroot_tmpdir/scmroot/xxhash
Cloning into '/var/lib/mock/dist-oc9-build-72353-47681/root/chroot_tmpdir/scmroot/xxhash'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/xxhash
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d0bc6f7 import xxhash-0.8.2-2.tl4