http://gitorious.org/~djs/review-board/djs-dev

I was going to merge all the various patches in, but I won't get to it until next week.

Can you post the debug output? Are you getting the 'origin' error even with git-svn?

Here's a sample for the git case:
>>> svn info
>>> git rev-parse --git-dir
>>> git svn info
>>> git svn --version
>>> git config --get svn-remote.svn.url
>>> git remote show origin
>>> repository info: Path: git://git.kernel.org/pub/scm/git/git.git, Base path: , Supports changesets: False
>>> git diff --no-color origin..

And, for reference:
$ git remote -v
origin	git://git.kernel.org/pub/scm/git/git.git

If I don't have an origin:

~/dev/git$ git remote rename origin foo
~/dev/git$ ~/reviewboard-git/trunk/rbtools/rbtools/postreview.py -d --server=http://localhost/
>>> svn info
>>> git rev-parse --git-dir
>>> git svn info
>>> git svn --version
>>> git config --get svn-remote.svn.url
>>> git remote show origin
Failed to execute command: ['git', 'remote', 'show', 'origin']
fatal: 'origin' does not appear to be a git repository
fatal: The remote end hung up unexpectedly

But, I can specify an upstream with --upstream:
~/dev/git$ ~/reviewboard-git/trunk/rbtools/rbtools/postreview.py -d --server=http://localhost/ --upstream=foo
>>> svn info
>>> git rev-parse --git-dir
>>> git svn info
>>> git svn --version
>>> git config --get svn-remote.svn.url
>>> git remote show foo
>>> repository info: Path: git://git.kernel.org/pub/scm/git/git.git, Base path: , Supports changesets: False
>>> git diff --no-color foo..


For git-svn, I don't use this regularly and I think there are a number of options for cloning an svn repo. I cloned the whole reviewboard repository as one git repository and git-svn resolves to the remote HEAD in svn. So, with default options:

>>> svn info
>>> git rev-parse --git-dir
>>> git svn info
>>> repository info: Path: http://reviewboard.googlecode.com/svn, Base path: /trunk, Supports changesets: False
>>> git config --get reviewboard.url
>>> svn propget reviewboard:url http://reviewboard.googlecode.com/svn
>>> git diff --no-color --no-prefix -r -u git-svn..
>>> git svn find-rev git-svn


The error you mentioned would probably come from git diff, which means that origin did resolve for the git remote show. Is it possible you have a remote named 'origin' but you've never fetched anything from it?

In testing this from my Review Board git-svn clone (which is from a while back and uses an upstream of "trunk" rather than "git-svn"):

post-review -d --server=http://localhost:8080 --upstream=trunk
>>> svn info
>>> git rev-parse --git-dir
>>> git svn info
>>> repository info: Path: https://reviewboard.googlecode.com/svn, Base path: /trunk, Supports changesets: False
>>> git diff --no-color --no-prefix -r -u trunk..
Failed to execute command: ['git', 'diff', '--no-color', '--no-prefix', '-r', '-u', 'trunk..']
["fatal: ambiguous argument 'trunk..': unknown revision or path not in the working tree.\n", "Use '--' to separate paths from revisions\n"]


From my win32-installer Git clone, with an upstream of origin:

post-review -d --server=http://localhost:8080
>>> svn info
>>> git rev-parse --git-dir
>>> git svn info
>>> git svn --version
>>> git config --get svn-remote.svn.url
>>> git remote show origin
>>> repository info: Path: git@github.com:reviewboard/win32-installer.git, Base path: , Supports changesets: False
>>> git diff --no-color --full-index origin..
Failed to execute command: ['git', 'diff', '--no-color', '--full-index', 'origin..']
fatal: ambiguous argument 'origin..': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions


For the record, I'm using git v1.5.4.4.