ZSH tab completion of git commands is very slow. How can I turn it off?

Question

If I type:

rm <TAB>

I'll see possible completions almost instantly.

However, if I type:

git rm <TAB>

It'll hang for several seconds if it's in a git repo, or fail to show any completions if I'm outside of a git repo.

How can I fix this behavior?

There's nothing in my .zshrc that looks like it has to do with git :-/

Answer 1

I finally bothered to google this and came up with this SO answer, which worked perfectly for me. Add this to .zshrc:

__git_files () { 
    _wanted files expl 'local files' _files     
}

There's also a deep mailing list thread here about it explaining what zsh is doing to take so long.