Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|From 8cda64fed0308533a1e79da9f5bdf2593d25c885 Mon Sep 17 00:00:00 2001
|From: Kipras Melnikovas <kipras@kipras.org>
|Date: Wed, 24 Feb 2021 03:54:42 +0200
|Subject: [PATCH] create initial color-version patch
|
|swaps cursor background with the character you're currently on,
|much like alacritty.
|
|still needs improvements
|
|Signed-off-by: Kipras Melnikovas <kipras@kipras.org>
|---
| x.c | 17 +++++++++++++++--
| 1 file changed, 15 insertions(+), 2 deletions(-)
|
|diff --git a/x.c b/x.c
|index 120e495..5a013f8 100644
|--- a/x.c
|+++ b/x.c
--------------------------
Patching file x.c using Plan A...
Hunk #1 succeeded at 1516 (offset -1 lines).
Hmm...  Ignoring the trailing garbage.
done