Downloading 10.2-RELEASE-p10 source without prayer

[Chris Stankevitz]

Hi,

I would like to bring an "authoritative" copy of 10.2-RELEASE-p10
source onto an air-gapped system so that I can update.  What is the
procedure for this?

1. svn checkout https://svn.FreeBSD.org/base/releng/10.2

2. verify sha1 fingerprint is
E9:37:73:80:B5:32:1B:93:92:94:98:17:59:F0:FA:A2:5F:1E:DE:B9

3. pray that I got -10 and not a partially-modified mid-commit copy of -11

Of course I'm being sarcastic about the prayer... but is there a way
(a tarball or special SVN tag/branch) to get the "official"
10.2-RELEASE-p10 code?  What do the freebsd-update servers use?

Thanks,

Chris