ok.
ok?

The diff in a nutshell:

openbsd# diff -U0 -r f3.orig f3
diff -U0 -r f3.orig/Makefile f3/Makefile
--- f3.orig/Makefile	Fri May  1 19:06:54 2026
+++ f3/Makefile	Fri May  1 19:09:11 2026
@@ -5 +5 @@
-GH_TAGNAME=	v9.0
+GH_TAGNAME=	v10.0
diff -U0 -r f3.orig/distinfo f3/distinfo
--- f3.orig/distinfo	Fri May  1 19:06:54 2026
+++ f3/distinfo	Fri May  1 19:09:16 2026
@@ -1,2 +1,2 @@
-SHA256 (f3-9.0.tar.gz) = Vp7Aadw+wcdNkNZwSqi39FJA9ZmKncbxTxc2yRdQbss=
-SIZE (f3-9.0.tar.gz) = 73728
+SHA256 (f3-10.0.tar.gz) = zlQnW3eT+XORWD7eM8HYdZCQHY2iDM5gSx8HoCmu/Gc=
+SIZE (f3-10.0.tar.gz) = 82954
diff -U0 -r f3.orig/patches/patch-Makefile f3/patches/patch-Makefile
--- f3.orig/patches/patch-Makefile	Fri May  1 19:06:54 2026
+++ f3/patches/patch-Makefile	Fri May  1 20:57:24 2026
@@ -9 +9 @@
--	$(INSTALL) -m644 f3read.1 $(DESTDIR)$(PREFIX)/share/man/man1
+-	$(INSTALL) -m644 man/f3read.1 $(DESTDIR)$(PREFIX)/share/man/man1
@@ -12 +12 @@
-+	$(INSTALL) -m644 f3read.1 $(DESTDIR)$(PREFIX)/man/man1
++	$(INSTALL) -m644 man/f3read.1 $(DESTDIR)$(PREFIX)/man/man1
diff -U0 -r f3.orig/patches/patch-f3read_c f3/patches/patch-f3read_c
--- f3.orig/patches/patch-f3read_c	Fri May  1 19:06:54 2026
+++ f3/patches/patch-f3read_c	Fri May  1 20:59:27 2026
@@ -2,2 +2,2 @@
---- f3read.c.orig
-+++ f3read.c
+--- src/f3read.c.orig
++++ src/f3read.c
diff -U0 -r f3.orig/patches/patch-f3write_c f3/patches/patch-f3write_c
--- f3.orig/patches/patch-f3write_c	Fri May  1 19:06:54 2026
+++ f3/patches/patch-f3write_c	Fri May  1 20:59:42 2026
@@ -2,2 +2,2 @@
---- f3write.c.orig
-+++ f3write.c
+--- src/f3write.c.orig
++++ src/f3write.c
openbsd#

You might want to run `make update-patches`, but this will rename files in patches/.