diff --git a/Jenkinsfile b/Jenkinsfile
index a9a4458..a1d7de8 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -1,17 +1,9 @@
 pipeline {
     agent { label 'docker-lehrer' }
-    environment {
-        GIT_COMMIT_AUTHOR = """${sh(
-                                   returnStdout: true,
-                                   script: 'git show -s --pretty=%an'
-                            )}"""
-        GIT_COMMIT_COMMENT = """${sh(
-                                   returnStdout: true,
-                                   script: 'git show -s --format=%s'
-                            )}"""
-    }
+
     options {
         buildDiscarder(logRotator(artifactNumToKeepStr: '0'))
+        skipDefaultCheckout()
     }
     parameters {
         string(name: 'USERNAME', defaultValue: 'Username', description: 'Benutzername')