$ git clone -n https://gitee.com/src-opencloudos-rpms/unifdef.git /var/lib/mock/dist-oc9-build-122378-71964/root/chroot_tmpdir/scmroot/unifdef
Cloning into '/var/lib/mock/dist-oc9-build-122378-71964/root/chroot_tmpdir/scmroot/unifdef'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/unifdef
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 44bf335 import unifdef-2.10-4.tl4