Create a worktree for an existing branch with a `/`?

[9999years]

If you want to create a worktree for a new branch with a / in it, you can do git prole add -b puppy/doggy, but if a puppy/doggy branch already exists, it errors out.

If you do git prole add puppy/doggy then doggy is used as the branch name.

If you do git prole add -B puppy/doggy, then the puppy/doggy branch is reset to the default branch.

Make it better!

[9999years]

Proposed design: git prole add -b BRANCH should check out BRANCH if it exists and create it otherwise. -B can still be used to force reset an existing branch.