Piston incorrectly thinks my repos is GIT

[Jodi]

Git support has completely broken my use of piston

jodi-showerss-mac-pro:admin jodi$ svn info
Path: .
URL: svn+ssh://svn.homestars.com/var/svn/repos/homestars/admin/trunk
Repository Root: svn+ssh://svn.homestars.com/var/svn/repos/homestars
Repository UUID: fb44d3a6-5937-0410-b662-d23fed69fdb6
Revision: 2922
Node Kind: directory
Schedule: normal
Last Changed Author: jodi
Last Changed Rev: 2866
Last Changed Date: 2009-06-04 10:54:57 -0400 (Thu, 04 Jun 2009)

jodi-showerss-mac-pro:admin jodi$ piston --verbose 5 update app/models
--repository-type=svn
DEBUG main: Piston::Commands::Update with options
{:repository_type=>:svn, :force=>false, :dry_run=>false, :verbose=>5, :lock=>false, :quiet=>false}
INFO handler: Guessing the working copy type of #<Pathname:/Users/
jodi/dev/homestars/admin/app/models>
DEBUG handler: Asking Piston::Git::WorkingCopy if it understands /
Users/jodi/dev/homestars/admin/app/models
DEBUG handler: git status on /Users/jodi/dev/homestars/admin/app/
models
DEBUG client: > git status
fatal: Not a git repository (or any of the parent directories): .git
DEBUG handler: Asking Piston::Svn::WorkingCopy if it understands /
Users/jodi/dev/homestars/admin/app/models
DEBUG client: > svn info /Users/jodi/dev/homestars/admin/app/models
INFO out: < Path: /Users/jodi/dev/homestars/admin/app/models
URL: svn+ssh://svn.homestars.com/var/svn/repos/homestars/admin/trunk/
app/models
Repository Root: svn+ssh://svn.homestars.com/var/svn/repos/homestars
Repository UUID: fb44d3a6-5937-0410-b662-d23fed69fdb6
Revision: 2922
Node Kind: directory
Schedule: normal
Last Changed Author: jodi
Last Changed Rev: 2866
Last Changed Date: 2009-06-04 10:54:57 -0400 (Thu, 04 Jun 2009)

DEBUG handler: Initialized on /Users/jodi/dev/homestars/admin/app/
models
/Users/jodi/dev/homestars/admin/app/models is not a working copy


any Ideas?
thanks.
Jodi

[Jodi]

oh, and:

$ piston --version
piston 2.0.2