Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff --git a/dwm.c b/dwm.c
|index 4465af1..bf74f60 100644
|--- a/dwm.c
|+++ b/dwm.c
--------------------------
Patching file dwm.c using Plan A...
Hunk #1 succeeded at 227.
Hunk #2 succeeded at 828.
Hunk #3 succeeded at 1369.
Hunk #4 succeeded at 2048.
done