1.) Run debian/rules get-orig-source to retrieve the original tarball. Windows
    specific libraries will be removed and also all font files which are replaced
    by system fonts.

2.) You must create the data/fonts directory again with some sort of content
    like an empty file. Otherwise tools like git-buildpackage will remove all
    empty directories when importing new upstream tarballs. This would lead to
    a FTBFS in this case.

