[nihzm]

If you don’t need it to be perfect it is actually not too difficult. A notch filter could be enough remove most of the pattern provided that you have a good way of guesstimating its frequency

[ortusdux]

It looks like Adobe Raw added a dedicated moire reduction slider to their denoising features a few years back. I wonder how it operates.

[bmicraft]

Being very slightly out of focus would probably be the best solution