Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|From 50753359eb7a760bcadd54611431c0888867c21c Mon Sep 17 00:00:00 2001
|From: Casey Fitzpatrick <kcghost@gmail.com>
|Date: Sat, 28 Jan 2023 09:46:53 -0500
|Subject: [PATCH] Spawn new tabs in working directory of selected clients child
|
|When used with st or xterm the working directory of the new tab
|should be the same as the currently selected tab.
|---
| tabbed.c | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++++++-
| 1 file changed, 56 insertions(+), 1 deletion(-)
|
|diff --git a/tabbed.c b/tabbed.c
|index eafe28a..eb046d0 100644
|--- a/tabbed.c
|+++ b/tabbed.c
--------------------------
Patching file tabbed.c using Plan A...
Hunk #1 succeeded at 10.
Hunk #2 succeeded at 85.
Hunk #3 succeeded at 170.
Hunk #4 succeeded at 178.
Hunk #5 succeeded at 771.
Hunk #6 succeeded at 1137.
Hunk #7 succeeded at 1159.
Hmm...  Ignoring the trailing garbage.
done