$ git clone -n https://gitee.com/src-opencloudos-rpms/replacer.git /var/lib/mock/dist-oc9-build-131041-78384/root/chroot_tmpdir/scmroot/replacer
Cloning into '/var/lib/mock/dist-oc9-build-131041-78384/root/chroot_tmpdir/scmroot/replacer'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/replacer
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4bd7379 import replacer-1.6-5.tl4