Import ClearCaase with history?

From: David Hagood <david.hagood@gmail.com>
Date: Mar 31, 2010, 11:33 UTC
Message-ID: <1270035189.2785.11.camel@chumley>

I am trying to drag where I work into a more modern software development process, but I am getting resistance from one division that has a large amount of history for some projects in a Clearcase repository. If I could show them that we could import all that history into git, it would go a long way to removing that resistance.

I've seen programs that purport to import Subversion (which is also good, as they also are using Subversion for other projects....) but do any such programs exist for Clearcase?

I know that, in theory, it would be possible to 
  for all checkins to Clearcase
     check out of Clearcase
     check into git
  done

but that would take an incredibly long time in practice, wouldn't it?