[racket-dev] How to avoid to modify .gitignore when pull request

I fork the codebase on my local computer. Then I .configure & make & make
install, as a result, there are many compiled things like bin or *.o files.

To avoid add them to my commit, I modify .gitignore to ignore them all.

But I can't avoid add .gitignore at all, isn't it?

So how do you solve this problem?
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