New orphan worktree?

[Stefan Monnier <monnier@iro.umontreal.ca>]

I use worktrees extensively (and rarely use `git checkout`).

When I need to create a new orphan branch with a new matching worktree
(or submodule), I find it is quite cumbersome.  I basically have
to do something like:

    git worktree add -b dummy foo
    cd foo
    git checkout --orphan newbranch
    git rm -rf .
    git branch -D dummy

I wish I could just do something like:

    git worktree add --orphan foo newbranch

instead,


        Stefan