$ git clone -n https://gitee.com/src-opencloudos-rpms/udftools.git /var/lib/mock/dist-oc9-build-121760-71766/root/chroot_tmpdir/scmroot/udftools
Cloning into '/var/lib/mock/dist-oc9-build-121760-71766/root/chroot_tmpdir/scmroot/udftools'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/udftools
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e06a127 import udftools-2.3-7.tl4