$ git clone -n https://gitee.com/src-opencloudos-rpms/docbook-dtds.git /var/lib/mock/dist-oc9-build-40988-14591/root/chroot_tmpdir/scmroot/docbook-dtds
Cloning into '/var/lib/mock/dist-oc9-build-40988-14591/root/chroot_tmpdir/scmroot/docbook-dtds'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/docbook-dtds
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ed938e2 import docbook-dtds-1.0-4.tl4