Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff '--color=auto' -up ../dwm-6.6/config.def.h ./config.def.h
|--- ../dwm-6.6/config.def.h	2025-08-09 15:00:55.740267680 +0200
|+++ ./config.def.h	2025-11-18 16:16:23.935996023 +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:
--------------------------
|Nur in .: dwm-barpadding-6.6.diff.
|diff '--color=auto' -up ../dwm-6.6/dwm.c ./dwm.c
|--- ../dwm-6.6/dwm.c	2025-08-09 15:00:55.740267680 +0200
|+++ ./dwm.c	2025-11-18 16:16:56.505092231 +0100
--------------------------
Patching file dwm.c using Plan A...
Hunk #1 succeeded at 240.
Hunk #2 succeeded at 571.
Hunk #3 succeeded at 712.
Hunk #4 succeeded at 738.
Hunk #5 succeeded at 1565.
Hunk #6 succeeded at 1594.
Hunk #7 succeeded at 1722.
Hunk #8 succeeded at 1833.
Hunk #9 succeeded at 1848.
Hunk #10 succeeded at 2168.
done