$ git clone -n https://gitee.com/ali-inspur/ffmpeg.git /var/lib/mock/dist-an23-build-512438-75099/root/chroot_tmpdir/scmroot/ffmpeg
Cloning into '/var/lib/mock/dist-an23-build-512438-75099/root/chroot_tmpdir/scmroot/ffmpeg'...
$ git fetch origin b4835e9d954a75f29a949122a3dd8a2fcb8a31c6:KOJI_FETCH_HEAD
From https://gitee.com/ali-inspur/ffmpeg
 * [new ref]         b4835e9d954a75f29a949122a3dd8a2fcb8a31c6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b4835e9 [CVE] fix CVE-2025-7700