pipeline {
    agent any 
    stages {
        stage('Stage 1') {
            steps {
                echo 'Hello world!!!'
				checkout([$class: 'GitSCM', branches: [[name: '*/master']], extensions: [], userRemoteConfigs: [[url: 'https://git.wmi.amu.edu.pl/s444386/ium_444386']]])
            }
        }
    }
}