Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff -up dwm-6.2-orig/config.def.h dwm-6.2-modd/config.def.h
|--- dwm-6.2-orig/config.def.h	2019-02-02 16:55:28.000000000 +0400
|+++ dwm-6.2-modd/config.def.h	2021-04-25 16:05:22.569759243 +0400
--------------------------
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-orig/dwm.c dwm-6.2-modd/dwm.c
|--- dwm-6.2-orig/dwm.c	2019-02-02 16:55:28.000000000 +0400
|+++ dwm-6.2-modd/dwm.c	2021-04-25 16:06:15.368310756 +0400
--------------------------
Patching file dwm.c using Plan A...
Hunk #1 succeeded at 92.
Hunk #2 succeeded at 138.
Hunk #3 succeeded at 287.
Hunk #4 succeeded at 300.
Hunk #5 succeeded at 1697.
done