$ git clone -n https://gitee.com/zhoujiajia111/ffmpeg.git /var/lib/mock/dist-an23-dde-build-430022-73007/root/chroot_tmpdir/scmroot/ffmpeg
Cloning into '/var/lib/mock/dist-an23-dde-build-430022-73007/root/chroot_tmpdir/scmroot/ffmpeg'...
$ git fetch origin 98d0bde84ff60599ba38aecdf7b2b88c74e7966e:KOJI_FETCH_HEAD
From https://gitee.com/zhoujiajia111/ffmpeg
 * [new ref]         98d0bde84ff60599ba38aecdf7b2b88c74e7966e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 98d0bde fix spec version