Does cvs2svn support incremental repository conversion?
No. Explanation: During the transition from CVS to Subversion, it would sometimes be useful to have the new Subversion repository track activity in the CVS repository for a period of time until the final switchover. This would require each conversion to determine what had changed in CVS since the last conversion, and add those commits on top of the Subversion repository. Unfortunately, cvs2svn/cvs2git does not support incremental conversions. With some work it would be possible to add this feature, but it would be difficult to make it robust. The trickiest problem is that CVS allows changes to the repository that have retroactive effects (e.g., affecting parts of the history that have already been converted). Some conversion tools claim to support incremental conversions from CVS, but as far as is known none of them are reliable. Volunteers or sponsorship to add support for incremental conversions to cvs2svn/cvs2git would be welcome.