diff --git a/Jenkinsfile b/Jenkinsfile
index 18610f8..9e0646b 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -21,6 +21,17 @@ node {
          ])
      ])
  }
+ 
+ stage('Checkout') {
+      steps {
+        script {
+           git credentialsId: 'jenkins-user-github', url: 'https://git.wmi.amu.edu.pl/s478855/ium_478855.git'
+           sh "ls -lart ./*" 
+           sh "git branch -a"
+           sh "git checkout master"
+          }
+       }
+    }
 
  stage('Build') {
      withEnv(["KAGGLE_USERNAME=${params.KAGGLE_USERNAME}",
@@ -31,7 +42,7 @@ node {
      }
  }
  
-  stage('Preparation') {
+  stage('Data Preparation') {
 		 sh 'echo "PREPARATION"'
 		 sh "chmod u+x ./preparation.sh"
          sh "KAGGLE_USERNAME=${KAGGLE_USERNAME} KAGGLE_KEY=${KAGGLE_KEY} CUTOFF=${CUTOFF} ./preparation.sh"