ignoring non-submodule subrepositories

Hello,

I have a repository inside another, and for several reasons, I do
not want to use git-submodule in this case. My issue is that
git-status lists the subrepository as untracked.

Of course, I could add it to .gitignore alright, but instead
I wonder whether it would not make sense to ignore subdirectories
themselves containing .git/ directories, not explicitly so as to not
mess with git-submodule, but implicitly.

Thoughts?

-- 
martin;              (greetings from the heart of the sun.)
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