$ git clone -n https://src.fedoraproject.org/rpms/retroarch.git /var/lib/mock/f41-build-860083-168769/root/chroot_tmpdir/scmroot/retroarch
Cloning into '/var/lib/mock/f41-build-860083-168769/root/chroot_tmpdir/scmroot/retroarch'...
$ git fetch origin 29b630c7b62c16185a52f016e30c338db71f75ec:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/retroarch
 * [new ref]         29b630c7b62c16185a52f016e30c338db71f75ec -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 29b630c Rebuild for ffmpeg 7