Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|From ec9fcfe019623ec6aff6476b6838eb4863098cf0 Mon Sep 17 00:00:00 2001
|From: ViliamKovac1223 <viliamkovac1223@gmail.com>
|Date: Sat, 9 Jul 2022 02:58:18 +0200
|Subject: [PATCH] add alt-tab functionality
|
|---
| config.def.h |  11 ++-
| dwm.c        | 218 +++++++++++++++++++++++++++++++++++++++++++++++++++
| 2 files changed, 228 insertions(+), 1 deletion(-)
|
|diff --git a/config.def.h b/config.def.h
|index a2ac963..3760870 100644
|--- a/config.def.h
|+++ b/config.def.h
--------------------------
Patching file config.def.h using Plan A...
Hunk #1 succeeded at 1.
Hunk #2 succeeded at 80.
Hunk #3 succeeded at 93.
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 5646a5c..90edf9b 100644
|--- a/dwm.c
|+++ b/dwm.c
--------------------------
Patching file dwm.c using Plan A...
Hunk #1 succeeded at 40.
Hunk #2 succeeded at 120.
Hunk #3 succeeded at 133.
Hunk #4 succeeded at 242.
Hunk #5 succeeded at 488.
Hunk #6 succeeded at 656.
Hunk #7 succeeded at 1672.
Hmm...  Ignoring the trailing garbage.
done