Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|From 66df5f738c17ba5cf23ba99ce18313a39fdfd291 Mon Sep 17 00:00:00 2001
|From: Hiltjo Posthuma <hiltjo@codemadness.org>
|Date: Fri, 17 Jun 2016 14:44:16 +0200
|Subject: [PATCH] dmenu mouse support
|
|---
| dmenu.c | 119 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
| 1 file changed, 118 insertions(+), 1 deletion(-)
|
|diff --git a/dmenu.c b/dmenu.c
|index a07f8e3..b60037f 100644
|--- a/dmenu.c
|+++ b/dmenu.c
--------------------------
Patching file dmenu.c using Plan A...
Hunk #1 succeeded at 449.
Hunk #2 succeeded at 611.
Hunk #3 succeeded at 705.
Hmm...  Ignoring the trailing garbage.
done