I have a client who is rather insistent about using Clearcase. Are there any tools/scripts that would allow my team to work against an SVN repository (or really anything
That article describes several ways for that:
http://www-01.ibm.com/support/docview.wss?ratlid=cctocbody&rs=984&uid=swg21258843.
Basically the variants:
1) If you are not interested in maintaining version history and merely wish to start from the latest version or a preselected configuration, you can use the clearfsimport command. Review the ClearCase Command Reference Guide on the topic of clearfsimport (cleartool man clearfsimport) for more information.
2) If you require version history, you may want to evaluate the open source tool svn2cc.
WORKAROUNDS:
It is possible to create views in Subversion representing certain milestones in your development stream. From there you can import the versions from each view sequentially using the aforementioned command clearfsimport. The clearfsimport command in this scenario will create a new version of the element each time it is run applying a label to the imported versions automatically.
You can try using clearexport_cvs, as the Subversion repository is very similar to that of CVS (Concurrent Versions System), see IBM Rational ClearCase Command Reference for more details on this export utility.