I have the following pipeline configuration DSL:

 pipelineJob("SOMEJOB") {	
  definition {
    cpsScm {			
      scm {
       git {
          remote {
	    github("https://github.myenterprise.ch/someorg/somerepo.git", "https")
	  }
	}
      }
     }
   }
}

And here the Github Enterprise configuration:

unclassified:
    gitHubConfiguration:
      endpoints:
      - apiUri: "https://github.myenterprise.ch/api/v3"
        name: "My Github"

After deploying the Jenkins CASC the project repository URL is
https://github.com/https://github.myenterprise.ch/someorg/somerepo.git.git and the pipeline fails out of obvious reasons.

Not sure if this is a bug or a misconfiguration, but any help would be appreciated.

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Edit: The issue is solved by using 

github("someorg/somerepo", "https", "github.myenterprise.ch")