martin@restno:~/emacs-git/trunk$ git apply /home/martin/temp/master..changes-2020-11-28.diff
   /home/martin/temp/master..changes-2020-11-28.diff:3847: space before tab in indent.
	   cont = foreach_window_1 (XWINDOW (w->contents), fn, user_data);
   warning: 1 Zeile fügt Whitespace-Fehler hinzu.

How was master..changes-2020-11-28.diff created?