can't freebsd-update from 7.1-PRERELEASE

[Joan Picanyol i Puig]

Hi,

Apparently 7.1-PRERELEASE has been pulled from freebsd-update's server
while I was being lazy:

calvin% sudo freebsd-update --debug upgrade -r 7.1-BETA2
Looking up update.FreeBSD.org mirrors... 1 mirrors found.
Fetching metadata signature for 7.1-PRERELEASE from
update1.FreeBSD.org... 
fetch: http://update1.FreeBSD.org/7.1-PRERELEASE/i386/latest.ssl: Not Found
failed.
No mirrors remaining, giving up.

Any workarounds?
-- 
pica