$ git clone -n https://gitee.com/src-opencloudos-rpms/aom /var/lib/mock/dist-oc9-epol-build-56061-14792/root/chroot_tmpdir/scmroot/aom
Cloning into '/var/lib/mock/dist-oc9-epol-build-56061-14792/root/chroot_tmpdir/scmroot/aom'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/aom
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 907c711 import aom-3.6.0-2.tl4