Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|From c2dda4ff0a6456f2b30406c9b5a7024a2f7c474d Mon Sep 17 00:00:00 2001
|From: aleks <aleks.stier@icloud.com>
|Date: Wed, 27 May 2020 17:57:15 +0200
|Subject: [PATCH] Apply netwmicon-0.8.4
|
|Enables to set *_NET_WM_ICON* which hardcodes an icon for st. An icon is
|already defined in the file *icon.h* which is stolen from
|[flat-remix](https://github.com/daniruiz/flat-remix).
|
|Generally the icon of an application is defined by its desktop-entry. A patch
|with the name [desktopentry](../desktopentry) already exists for this purpose.
|However, some programs like tint2 do not respect the desktopentry and rely
|instead on an hardcoded icon which has to be defined by *_NET_WM_ICON*. Since
|st does not define *_NET_WM_ICON* those programs will display some default icon
|(which is ugly).
|
|You can of course change the icon to any icon you want. Just grab some icon
|from your favorite icon-theme. The tricky part is that it needs to be encoded
|as *"an array of 32bit packed CARDINAL ARGB with high byte being A, low byte
|being B" -
|[Source](https://specifications.freedesktop.org/wm-spec/1.3/ar01s05.html)*.
|This can be done with the script [netwmicon.sh](netwmicon.sh). It takes as
|argument the icon-file and prints to stdout the encoded icon. Redirect it to
|icon.h to save it and reinstall st. You need to install both *imagemagick* and
|*inkscape* for the script to work.
|
|Bug: netwmicon.sh seems to distort the icon.
|
|---
| icon.h | 686 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
| x.c    |   7 +-
| 2 files changed, 692 insertions(+), 1 deletion(-)
| create mode 100644 icon.h
|
|diff --git a/icon.h b/icon.h
|new file mode 100644
|index 0000000..7ab09d0
|--- /dev/null
|+++ b/icon.h
--------------------------
(Creating file icon.h...)
Patching file icon.h using Plan A...
Empty context always matches.
Hunk #1 succeeded at 1.
Hmm...  The next patch looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff --git a/x.c b/x.c
|index 210f184..396ac33 100644
|--- a/x.c
|+++ b/x.c
--------------------------
Patching file x.c using Plan A...
Hunk #1 succeeded at 17.
Hunk #2 succeeded at 94.
Hunk #3 succeeded at 1189.
Hmm...  Ignoring the trailing garbage.
done