$ git clone -n https://gitee.com/src-opencloudos-rpms/libao.git /var/lib/mock/dist-oc9-build-63494-16463/root/chroot_tmpdir/scmroot/libao
Cloning into '/var/lib/mock/dist-oc9-build-63494-16463/root/chroot_tmpdir/scmroot/libao'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libao
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 088f2c4 import libao-1.2.0-4.tl4