Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|From dee230eb56b95c5bc336ad5494675009e76830d1 Mon Sep 17 00:00:00 2001
|From: save196 <saverioturetta@protonmail.com>
|Date: Tue, 22 Mar 2022 22:10:05 +0200
|Subject: [PATCH] fixes and updated to work with dwm 6.3
| version
|
|- Fix bug where windows moved incorrectly while dragged with the mouse
|  in the floating layout
|- Updated patch to work with dwm 6.3
|---
| config.def.h |  4 ++++
| dwm.c        | 57 ++++++++++++++++++++++++++++++++++++++++------------
| 2 files changed, 48 insertions(+), 13 deletions(-)
|
|diff --git a/config.def.h b/config.def.h
|index a2ac963..8f3da2b 100644
|--- a/config.def.h
|+++ b/config.def.h
--------------------------
Patching file config.def.h using Plan A...
Hunk #1 succeeded at 2.
Hunk #2 succeeded at 86.
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 5f16260..506bb1a 100644
|--- a/dwm.c
|+++ b/dwm.c
--------------------------
Patching file dwm.c using Plan A...
Hunk #1 succeeded at 119.
Hunk #2 succeeded at 201.
Hunk #3 succeeded at 641 (offset -1 lines).
Hunk #4 succeeded at 1289 (offset -1 lines).
Hunk #5 succeeded at 1513 (offset -1 lines).
Hunk #6 succeeded at 1699 (offset -1 lines).
Hmm...  Ignoring the trailing garbage.
done