$ git clone -n https://gitee.com/fundawang/ffmpeg.git /var/lib/mock/dist-an23-build-347822-70386/root/chroot_tmpdir/scmroot/ffmpeg
Cloning into '/var/lib/mock/dist-an23-build-347822-70386/root/chroot_tmpdir/scmroot/ffmpeg'...
$ git fetch origin 2c9a12b3954a3f27a88918afa0f363f0b389e511:KOJI_FETCH_HEAD
From https://gitee.com/fundawang/ffmpeg
 * [new ref]         2c9a12b3954a3f27a88918afa0f363f0b389e511 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2c9a12b Cleanup spec