Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|From 9a6f20cd810e7c556534ba76f379573212c2dc66 Mon Sep 17 00:00:00 2001
|From: Miles Alan <m@milesalan.com>
|Date: Wed, 24 Mar 2021 20:22:30 -0500
|Subject: [PATCH] Add invert function which changes the current colors' RGB
| values to be inversed
|
|---
| config.def.h |  1 +
| x.c          | 39 ++++++++++++++++++++++++++++++++++++---
| 2 files changed, 37 insertions(+), 3 deletions(-)
|
|diff --git a/config.def.h b/config.def.h
|index 6f05dce..8669717 100644
|--- a/config.def.h
|+++ b/config.def.h
--------------------------
Patching file config.def.h using Plan A...
Hunk #1 succeeded at 199.
Hmm...  The next patch looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff --git a/x.c b/x.c
|index 210f184..3dd9f3d 100644
|--- a/x.c
|+++ b/x.c
--------------------------
Patching file x.c using Plan A...
Hunk #1 succeeded at 59.
Hunk #2 succeeded at 253.
Hunk #3 succeeded at 841.
Hunk #4 succeeded at 1454.
Hunk #5 succeeded at 1553.
Hmm...  Ignoring the trailing garbage.
done