Power failure during portsnap fetch update

[Robert Bonomi]

> From owner-freebsd-questions at freebsd.org  Sat Jul 21 09:40:20 2012
> Date: Sat, 21 Jul 2012 16:38:02 +0200
> From: Leslie Jensen <leslie at eskk.nu>
> To: freebsd-questions at freebsd.org
> Subject: Power failure during portsnap fetch update
>
>
> My file system /usr/ports/net go damaged
>
> I've done fsck -F in single user mode but there are warnings about not 
> being able to fix this.

"Insufficient Data" for a meaningful response.  *sigh*

_Exactly_ WHAT the command line used was, and *WHAT* the exact text of
the error message says is needed before anyone can help.