$ git clone -n https://gitee.com/zhoujiajia111/ffmpeg.git /var/lib/mock/dist-an23.3-build-429943-73036/root/chroot_tmpdir/scmroot/ffmpeg
Cloning into '/var/lib/mock/dist-an23.3-build-429943-73036/root/chroot_tmpdir/scmroot/ffmpeg'...
$ git fetch origin 984b51df4fd7489617cc819cbb051df0ea95ee94:KOJI_FETCH_HEAD
From https://gitee.com/zhoujiajia111/ffmpeg
 * [new ref]         984b51df4fd7489617cc819cbb051df0ea95ee94 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 984b51d update ffmpeg.spec.