Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|From f16313b64965d74e6cbb30fa41d53aaf09b9ad49 Mon Sep 17 00:00:00 2001
|From: David Lima <antdavidlima@gmail.com>
|Date: Sun, 28 Nov 2021 17:02:43 -0300
|Subject: [PATCH] apply dracula theme to dmenu
|
|---
| config.def.h | 4 ++--
| 1 file changed, 2 insertions(+), 2 deletions(-)
|
|diff --git a/config.def.h b/config.def.h
|index 1edb647..e688388 100644
|--- a/config.def.h
|+++ b/config.def.h
--------------------------
Patching file config.def.h using Plan A...
Hunk #1 succeeded at 9.
Hmm...  Ignoring the trailing garbage.
done