How to ‘clone’ a wp plugin to make small changes

I’m looking to make small changes to the Advanced Bank Payment Transfer Gateway plugin and was looking for guidance for this since reaching out to the developer didn’t help.

Basically this plugin works like I want it to, however I’m from a place disconnected from the international banking system, so the info we need to make a bank transfer is a bit different, the info it currently asks to fill in and shows to the clients is this:

standard format

but I need it to ask for something like this:

format-wanted

Can I somehow clone or copy the plugin and have a new plugin that works the way I need it?

Absolute noob here so any advice or guidance is very welcomed. Thanks for reading!