Error message?
Code:
sudo freebsd-update fetch
src component not installed, skipped
Looking up update.FreeBSD.org mirrors... 3 mirrors found.
Fetching public key from update4.freebsd.org... failed.
Fetching public key from update5.freebsd.org... failed.
Fetching public key from update6.freebsd.org... failed.
No mirrors remaining, giving up.