$ git clone -n https://gitee.com/zhoujiajia111/ffmpeg.git /var/lib/mock/dist-an23.3-build-429844-73036/root/chroot_tmpdir/scmroot/ffmpeg
Cloning into '/var/lib/mock/dist-an23.3-build-429844-73036/root/chroot_tmpdir/scmroot/ffmpeg'...
$ git fetch origin 4a30071af7625b0551aa05749646f58dbdb36361:KOJI_FETCH_HEAD
From https://gitee.com/zhoujiajia111/ffmpeg
 * [new ref]         4a30071af7625b0551aa05749646f58dbdb36361 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4a30071 update ffmpeg.spec. update for libtheora 1.2.0