Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|From 75012a6ab9cc1b6c319af7f4ae7d682b16a66ce3 Mon Sep 17 00:00:00 2001
|From: Miles Alan <m@milesalan.com>
|Date: Sun, 26 Apr 2020 16:05:43 -0500
|Subject: [PATCH] Add inplacerotate fn to rotate all, master, or stacks clients
| inplace
|
|CW (+2) or CCW (-2) Rotates all windows.
|CW (+1) or CCW (-1) Rotates master xor stack windows (depending on focus).
|
|Focus position stays 'in-place' so the area of the screen you are focused
|on remains unchanged.
|---
| config.def.h |  4 ++++
| dwm.c        | 59 ++++++++++++++++++++++++++++++++++++++++++++++++++++
| 2 files changed, 63 insertions(+)
|
|diff --git a/config.def.h b/config.def.h
|index 1c0b587..9bcb792 100644
|--- a/config.def.h
|+++ b/config.def.h
--------------------------
Patching file config.def.h using Plan A...
Hunk #1 succeeded at 66.
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..3930680 100644
|--- a/dwm.c
|+++ b/dwm.c
--------------------------
Patching file dwm.c using Plan A...
Hunk #1 succeeded at 175.
Hunk #2 succeeded at 2148.
Hmm...  Ignoring the trailing garbage.
done