submodule add does not consider git svn

From: rupert THURNER <rupert.thurner@gmail.com>
Date: Jul 23, 2011, 03:33 UTC
Message-ID: <CAJs9aZ9cMZd5PfOW7Zfza3un5JqKRM5eQdDpKPCWvLn-vkzktA@mail.gmail.com>

it seems that "git submodule add" looses information from "git svn clone". what am i missing here which would allow to "git svn rebase" the repository, even if it is newly added as submodule?

the following example takes a little, as the repository has 15'000 revisions, even 99% do not concern the checked out part.

rupert @ login : ~/tmp/subm-bug
 mkdir -p  ~/tmp/subm-bug
 cd ~/tmp/subm-bug
 git svn clone https://gar.svn.sourceforge.net/svnroot/gar/csw/mgar/pkg/GeoIP/trunk
GeoIP
 git init test
 cd test
 git submodule add ~/tmp/subm-bug/GeoIP
 cd GeoIP
 git svn rebase

Migrating from a git-svn v1 layout...
Data from a previous version of git-svn exists, but
        .git/svn
        (required for this version (1.7.5.4) of git-svn) does not exist.
Done migrating from a git-svn v1 layout
Unable to determine upstream SVN information from working tree history