How do I clone into a non-empty directory?

Question

I have directory A with files matching directory B. Directory A may have other needed files. Directory B is a git repo.

I want to clone directory B to directory A bu

Answer 1

I have used this a few moments ago, requires the least potentially destructive commands:

cd existing-dir
git clone --bare repo-to-clone .git
git config --unset core.bare
git remote rm origin
git remote add origin repo-to-clone
git reset

And voilá!