Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|From d47ba0b8aab26ffb2569c0d05df24fdd61b3f4b0 Mon Sep 17 00:00:00 2001
|From: aymey <fabianpaci@gmail.com>
|Date: Mon, 5 Dec 2022 22:57:41 +1100
|Subject: [PATCH] Sticky windows respect EWMH
|
|---
| dwm.c | 51 ++++++++++++++++++++++++++++++++++++++++++++-------
| 1 file changed, 44 insertions(+), 7 deletions(-)
|
|diff --git a/dwm.c b/dwm.c
|index 253aba7..a9157bf 100644
|--- a/dwm.c
|+++ b/dwm.c
--------------------------
Patching file dwm.c using Plan A...
Hunk #1 succeeded at 49.
Hunk #2 succeeded at 61.
Hunk #3 succeeded at 92.
Hunk #4 succeeded at 200.
Hunk #5 succeeded at 213.
Hunk #6 succeeded at 528.
Hunk #7 succeeded at 1504.
Hunk #8 succeeded at 1583.
Hunk #9 succeeded at 1741 (offset -2 lines).
Hunk #10 succeeded at 2040 (offset -2 lines).
Hunk #11 succeeded at 2181 (offset -2 lines).
Hmm...  Ignoring the trailing garbage.
done