Load different R package versions at once with git worktree

Do you ever see GitHub issue comments where someone posts the results of a reprex with a current package version, and then with an older one, to prove a regression? How would you go about preparing such a report? Today I learnt there is a clean way to have different versions of a codebase at once on your computer, thanks to the ever powerful Git.

Assumption: you want to load the package at different stages of its history

I’m not …