Getting rid of "mode change" on cygwin

I just switched from svn to git and in my first git commit all files get status modified with

mode change 100644 => 100755

I don't care about the file mode much, the 755 mode makes no sense but is probably some cygwin magic, as it may be hard to emulate the perms, so it simply considers all files as executables. I can't change the mode, since chmod a-x does nothing at all. Actually, I don't care about the perms at all, I'd be happy if git would show "no change" for unchanged files.