IANAL. In my opinion, porting code to a different language is still derivative work of the code you are porting it from. Whether done by hand or with an LLM. And in my opinion, the license of the original code still applies. Which means that not only should one link to the repo for the code that was ported, but also make sure to adhere to the terms to the license.

The MIT family of licenses state that the copyright notice and terms shall be included in all copies of the software.

Porting code to a different language is in my opinion not much different from forking a project and making changes to it, small or big.

I therefore think the right thing to do is to keep the original copyright notice and license file, and adding your additional copyright line to it.

So for example if the original project had an MIT license file that said

Copyright 2019 Suchandsuch

Permission is hereby granted and so on

You should keep all of that and add your copyright year and author name on the next line after the original line or lines of the authors of the repo you took the code from.