If you have a plastic glue gun you can always try that. Pull the hole together, put a piece of material one side of the net, pipe glue all over the rip then sandwich with another piece of material ( the material should be something that the glue will not adhere to, ie steel or something similar )
Just a warning on using cable ties, I have seen a angler told he can’t use a net with cable tie repairs in, even though the tags were on the outside.
I’m afraid, having lost a netful of fish that cost me a win, albeit many years ago, I replace nets when they start to look worn and definitely replace them if they get holed.
That’s said, with the onset of winter and lower weights likely, I did try to mend one the other week, one of the rings had broken, I put a tiny slit in the mesh adjacent to the join, got the broken pieces out of the inside of the hoops (aluminium ring, with a smaller aluminium tube as the joiner) and used some industrial strength glue to hold a new joiner in place, what I didn’t realise would happen, was that the glue, attacked/melted the net material, so even after all that work, it ended up in the bin.