$ git clone -n https://gitee.com/src-opencloudos-rpms/a52dec.git /var/lib/mock/dist-oc9-build-45712-14592/root/chroot_tmpdir/scmroot/a52dec
Cloning into '/var/lib/mock/dist-oc9-build-45712-14592/root/chroot_tmpdir/scmroot/a52dec'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/a52dec
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 38faa35 import a52dec-0.7.4-3.tl4