Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff -up dwm-6.2-original/config.def.h dwm-6.2-modified/config.def.h
|--- dwm-6.2-original/config.def.h	2019-02-02 14:55:28.000000000 +0200
|+++ dwm-6.2-modified/config.def.h	2019-11-18 19:36:22.515566509 +0200
--------------------------
Patching file config.def.h using Plan A...
Hunk #1 succeeded at 26.
Hmm...  The next patch looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff -up dwm-6.2-original/dwm.c dwm-6.2-modified/dwm.c
|--- dwm-6.2-original/dwm.c	2019-02-02 14:55:28.000000000 +0200
|+++ dwm-6.2-modified/dwm.c	2019-11-18 19:37:18.792187705 +0200
--------------------------
Patching file dwm.c using Plan A...
Hunk #1 succeeded at 92.
Hunk #2 succeeded at 138.
Hunk #3 succeeded at 304.
Hunk #4 succeeded at 1789.
done