How do I know if my 13-stable has security patches?

[Kevin Oberman]

In the svn days, I could just look at my svn revision to check on whether a
security patch was required. Now I have a git hash. I have no idea how to
tell if my system running 13-STABLE of a few days ago has the patch.

Branch/path                                                      Revision
- -------------------------------------------------------------------------
stable/13/                       894360bacd42f021551f76518edd445f6d299f2e
releng/13.0/                     9f00cb5fa8a438e7b9efb2158f2e2edc730badd1
stable/12/                                                        r369312
releng/12.2/                                                      r369353

Is there a git command that can confirm whether a given hash is covered in
my system?
--
Kevin Oberman, Part time kid herder and retired Network Engineer
E-mail: rkoberman at gmail.com
PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683