Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|From 64fb38e3778addc0272eb8793deb909e639e5746 Mon Sep 17 00:00:00 2001
|From: piotr-marendowski <piotr-marendowski@tutanota.com>
|Date: Thu, 6 Jul 2023 10:03:03 +0000
|Subject: [PATCH] Displays date and time at the bottom of the vertical layout.
|
|---
| dmenu.c | 20 +++++++++++++++++++-
| 1 file changed, 19 insertions(+), 1 deletion(-)
|
|diff --git a/dmenu.c b/dmenu.c
|index 7cf253b..5428f67 100644
|--- a/dmenu.c
|+++ b/dmenu.c
--------------------------
Patching file dmenu.c using Plan A...
Hunk #1 succeeded at 84.
Hunk #2 succeeded at 143.
Hunk #3 succeeded at 188.
Hmm...  Ignoring the trailing garbage.
done