$ git clone -n https://gitee.com/fundawang/ffmpeg.git /var/lib/mock/dist-an23-build-347805-70386/root/chroot_tmpdir/scmroot/ffmpeg
Cloning into '/var/lib/mock/dist-an23-build-347805-70386/root/chroot_tmpdir/scmroot/ffmpeg'...
$ git fetch origin a072ea674b2b6115dea7863dd7632d7b897a3cbb:KOJI_FETCH_HEAD
From https://gitee.com/fundawang/ffmpeg
 * [new ref]         a072ea674b2b6115dea7863dd7632d7b897a3cbb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a072ea6 Cleanup spec