Comment by yes_or_gnome

The tool that doesn't work with case insensitive filenames is OSX.

Edit: To add, how is git supposed to handle two files with the same name -- as is the case -- with a case insensitive file system? You can't have two files with the "same" name.

    git checkout file1

Is entirely different than

    git checkout FILE1

In any other platform ls file1 FILE1 would show two different files, but on OSX, it'll show the same file twice.