$ git clone -n https://gitee.com/src-opencloudos-rpms/fdk-aac-free.git /var/lib/mock/dist-oc9-build-61464-16463/root/chroot_tmpdir/scmroot/fdk-aac-free
Cloning into '/var/lib/mock/dist-oc9-build-61464-16463/root/chroot_tmpdir/scmroot/fdk-aac-free'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/fdk-aac-free
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6e5f34d import fdk-aac-free-2.0.0-4.tl4