Started by GitHub push by mscuttari
java.lang.NullPointerException: Cannot invoke "org.eclipse.jgit.lib.Ref.getObjectId()" because the return value of "org.eclipse.jgit.lib.Repository.findRef(String)" is null
	at jenkins.plugins.git.GitSCMFileSystem.lambda$new$0(GitSCMFileSystem.java:118)
	at jenkins.plugins.git.GitSCMFileSystem.lambda$invoke$e8567d7e$1(GitSCMFileSystem.java:185)
	at org.jenkinsci.plugins.gitclient.AbstractGitAPIImpl.withRepository(AbstractGitAPIImpl.java:28)
	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.withRepository(CliGitAPIImpl.java:83)
	at jenkins.plugins.git.GitSCMFileSystem.invoke(GitSCMFileSystem.java:185)
	at jenkins.plugins.git.GitSCMFileSystem.<init>(GitSCMFileSystem.java:118)
	at jenkins.plugins.git.GitSCMFileSystem$BuilderImpl.build(GitSCMFileSystem.java:409)
	at jenkins.scm.api.SCMFileSystem.of(SCMFileSystem.java:219)
	at org.jenkinsci.plugins.workflow.cps.CpsScmFlowDefinition.create(CpsScmFlowDefinition.java:126)
	at org.jenkinsci.plugins.workflow.cps.CpsScmFlowDefinition.create(CpsScmFlowDefinition.java:73)
	at org.jenkinsci.plugins.workflow.job.WorkflowRun.run(WorkflowRun.java:311)
	at hudson.model.ResourceController.execute(ResourceController.java:101)
	at hudson.model.Executor.run(Executor.java:442)
Finished: FAILURE