This repo forked https://github.com/joaorr3/git-worktrees.
And it changed a little to use.
worktree will always open in new window.
when create a new worktree, it will always use the same .worktree folder, like this:
This extension provides a GUI for managing git worktrees. You can add, delete and switch between them.
Add a new worktree by creating a new branch or from selection an existing one.
A new directory will be created for you based on the current branch path. For ex. Your repo is called MyAwesomeRepo and you've added a new worktree from a branch called MyAwesomeBranch. A new directory called MyAwesomeRepo.worktrees will be created with a folder MyAwesomeBranch inside it.