It should indicate 10.2-STABLE. Can you post the output ofsvn info /usr/src
?
Path: /usr/src
Working Copy Root Path: /usr/src
URL: svn://svn.freebsd.org/base/stable/10
Relative URL: ^/stable/10
Repository Root: svn://svn.freebsd.org/base
Repository UUID: ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
Revision: 286842
Node Kind: directory
Schedule: normal
Last Changed Author: glebius
Last Changed Rev: 286841
Last Changed Date: 2015-08-17 11:03:23 +0100 (Mon, 17 Aug 2015)
# svnlite co https://svn.freebsd.org/base/releng/10.2 /usr/src
.