When creating a codebuild project with a codecommit source (as shown here: https://docs.aws.amazon.com/cdk/api/latest/docs/aws-codebuild-readme.html#codecommitsource), how can I set the SourceVersion for the codecommit repository?
I can specify the source version manually in console, and cloudformation supports it (https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-codebuild-project.html#cfn-codebuild-project-sourceversion), but appears to be no option to set this through CDK in the default codebuild project constructor.