$ git clone -n https://gitee.com/fundawang/ffmpeg.git /var/lib/mock/dist-an23-build-347796-70386/root/chroot_tmpdir/scmroot/ffmpeg
Cloning into '/var/lib/mock/dist-an23-build-347796-70386/root/chroot_tmpdir/scmroot/ffmpeg'...
$ git fetch origin 0368eec54c97c64adf97a34a6a6a0de571447354:KOJI_FETCH_HEAD
From https://gitee.com/fundawang/ffmpeg
 * [new ref]         0368eec54c97c64adf97a34a6a6a0de571447354 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0368eec Cleanup spec