Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|From 3867ef5a68e15a4faff377ddbc8371853de4a800 Mon Sep 17 00:00:00 2001
|From: aleks <aleks.stier@icloud.com>
|Date: Sat, 19 Oct 2019 00:56:21 +0200
|Subject: [PATCH] Put master to exact position of zoomed client
|
|The default behaviour when zooming a client is to put the previous
|master on top of the client-stack. This patch puts the master to the
|exact position of the zoomed client in the stack.
|---
| dwm.c | 44 ++++++++++++++++++++++++++++++++++++++++----
| 1 file changed, 40 insertions(+), 4 deletions(-)
|
|diff --git a/dwm.c b/dwm.c
|index 4465af1..1719b36 100644
|--- a/dwm.c
|+++ b/dwm.c
--------------------------
Patching file dwm.c using Plan A...
Hunk #1 succeeded at 165.
Hunk #2 succeeded at 236.
Hunk #3 succeeded at 782.
Hunk #4 succeeded at 2126.
Hmm...  Ignoring the trailing garbage.
done