Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff -Nup surf-2.1/surf.c surf-icon/surf.c
|--- surf-2.1/surf.c	Sun May  9 19:34:33 2021
|+++ surf-icon/surf.c	Sat Oct  1 12:30:40 2022
--------------------------
Patching file surf.c using Plan A...
Hunk #1 succeeded at 39.
Hunk #2 succeeded at 302.
Hunk #3 succeeded at 328.
Hunk #4 succeeded at 418.
Hmm...  The next patch looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff -Nup surf-2.1/surf.xpm surf-icon/surf.xpm
|--- surf-2.1/surf.xpm	Wed Dec 31 21:00:00 1969
|+++ surf-icon/surf.xpm	Sat Oct  1 11:44:16 2022
--------------------------
(Creating file surf.xpm...)
Patching file surf.xpm using Plan A...
Empty context always matches.
Hunk #1 succeeded at 1.
done