First timer
He's talking about a 'California Patch' That a patch piece with the face paper left on about an inch and a half all the way around.
That type of patch is intended for smaller opening like covering old electric box sized holes.
I'd add some blocking to that opening and tape with paper--all purpose to hold the paper and then light weight for the topping.(I'm used to paper and haven't used mesh in years--personal preference)
--Mike---
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