Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff '--color=auto' -up dwm-6.2/config.def.h dwm-6.2.mod/config.def.h
|--- dwm-6.2/config.def.h	2019-02-02 13:55:28.000000000 +0100
|+++ dwm-6.2.mod/config.def.h	2022-01-03 20:26:11.471155370 +0100
--------------------------
Patching file config.def.h using Plan A...
Hunk #1 succeeded at 5.
Hmm...  The next patch looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff '--color=auto' -up dwm-6.2/dwm.c dwm-6.2.mod/dwm.c
|--- dwm-6.2/dwm.c	2019-02-02 13:55:28.000000000 +0100
|+++ dwm-6.2.mod/dwm.c	2022-01-03 20:25:13.845842063 +0100
--------------------------
Patching file dwm.c using Plan A...
Hunk #1 succeeded at 702.
done