$ git clone -n https://gitee.com/src-anolis-dde/ffmpeg.git /var/lib/mock/dist-an7_9-updates-build-304050-65941/root/chroot_tmpdir/scmroot/ffmpeg
Cloning into '/var/lib/mock/dist-an7_9-updates-build-304050-65941/root/chroot_tmpdir/scmroot/ffmpeg'...
$ git fetch origin ac7d7472756e4d05c1e2ef496be60498533d43e5:KOJI_FETCH_HEAD
From https://gitee.com/src-anolis-dde/ffmpeg
 * [new ref]         ac7d7472756e4d05c1e2ef496be60498533d43e5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ac7d747 rebuild for qt5-qtbase-5.15.3