$ git clone -n https://gitee.com/src-opencloudos-rpms/perl-Sub-Exporter.git /var/lib/mock/dist-oc9-build-130101-78073/root/chroot_tmpdir/scmroot/perl-Sub-Exporter
Cloning into '/var/lib/mock/dist-oc9-build-130101-78073/root/chroot_tmpdir/scmroot/perl-Sub-Exporter'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/perl-Sub-Exporter
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 98136d9 import perl-Sub-Exporter-0.991-3.tl4