I highly recommend getting a clipboard manager! They keep a (usually configurable) history of your most recent clipboard items and allow switching the active selection between them.
Surely. First time I used clipboard management was long time ago somewhen in windows xp era. But growing older make me not really incentivized on trying myself to relearn clipboard history gestures. I might do that someday though.
The difference is now I know git and text editor with hot-save support; with mostly textual clipboard, the texts usually just land in either git/editor.
I don't want a good-faith workaround for a website hijacking my clipboard. I want the website and its developers to stop doing things that are stupid and wrong.