FogBugz Plugin Interfaces > Source Control Integration
IPluginCVSJoin: Customize the data fields available in an instance of FogCreek.FogBugz.CCVS, the class representing a version of a file contained in a source control repository. (Example)
PluginCVSCommit: Perform custom operations when a source-controlled file version is committed to the FogBugz database. (Example)