Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|From 3875094925f817e047049635514034a75275d269 Mon Sep 17 00:00:00 2001
|From: Jakub Leszczak <szatan@gecc.xyz>
|Date: Sat, 18 Apr 2020 19:17:46 +0200
|Subject: [PATCH] Respect decoration hints
|
|Make dwm respect _MOTIF_WM_HINTS property.  Applications use this
|property to notify window managers to not draw window decorations.
|
|Not respecting this property leads to issues with applications that draw
|their own borders, like chromium (with "Use system title bar and
|borders" turned off) and vlc in fullscreen mode.
|---
| config.def.h |  1 +
| dwm.c        | 47 ++++++++++++++++++++++++++++++++++++++++++++++-
| 2 files changed, 47 insertions(+), 1 deletion(-)
|
|diff --git a/config.def.h b/config.def.h
|index 1c0b587..2a32635 100644
|--- a/config.def.h
|+++ b/config.def.h
--------------------------
Patching file config.def.h using Plan A...
Hunk #1 succeeded at 35.
Hmm...  The next patch looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff --git a/dwm.c b/dwm.c
|index 4465af1..95873c7 100644
|--- a/dwm.c
|+++ b/dwm.c
--------------------------
Patching file dwm.c using Plan A...
Hunk #1 succeeded at 57.
Hunk #2 succeeded at 227.
Hunk #3 succeeded at 267.
Hunk #4 succeeded at 1064.
Hunk #5 succeeded at 1251.
Hunk #6 succeeded at 1573.
Hunk #7 succeeded at 1937.
Hmm...  Ignoring the trailing garbage.
done