Question: when git clone depth override is empty

https://github.com/awslabs/aws-codebuild-jenkins-plugin/blob/3fbfde23b8a8c71bcabfe241759846b5696f53de/src/main/java/CodeBuilder.java#L825-L832

Why is the plugin using `0` as override when the input value is empty? Doesn't it make more sense to use the pipeline default setting?

Start at src/main/java/CodeBuilder.java lines 825-832 and trace how an empty git clone depth reaches the override value. Compare that behavior with the Jenkins pipeline default setting, then verify the intended result with the relevant plugin tests or a minimal reproduction; done means the empty input has a documented, tested behavior.

Written by the indexing model from the issue text.