Sergey Organov [off-list ref] writes:

Also, I'm almost sure that the first thing almost every worktree novice
does (I did), quite naturally, is:

$ git wotktree add <branch>

that happily succeeds /anywhere/ inside primary worktree without any
warning for me. It probably should either have created $top/../<branch>
instead, or refuse to proceed without confirmation in the first place.

Yeah, I almost never type 'git worktree add <directory>' without
"../" at the beginning of the directory, and every time I do so, I
do wonder if this is a UI pitfall that we should warn the users
about.  Perhaps we should start from documentation updates and
possibly a new warning or two?

Thanks.