The git repo is equivalent to the tarball content. Actually commits in the git repo are created from the tarballs - even if the tarball is later discarded and not uploaded to sourceforge (as is the case with e.g. translation-update tarballs).
But as Stu said, if he checked that out from the git, it has no tarball content. At least I think so.
Stu didn't say that.
Stoatwblr, did you use a fresh tarball, or did you apply a patch?
That might be a reason.
As he said and I pointed out, it might be the case that he used an older tarball from you, and just applied diffs (from your site) to that old tarball. I guess that diffs are from SVN, and not from actually comparing tarball content, right?