Test deployment to vapor with dynamic commit message from git

Jenkinsfile

@@ -19,21 +19,13 @@ pipeline {
     stages {
         stage('Download source code from Git') {
              steps {
-                git(
+                scmVars = git(
                    url: httpUrl,
                    credentialsId: 'gitlab-jenkins-localhost',
                    branch: 'dillon/34-jenkins-vapor'
                 )
-            }
-        }
-
-        stage('Get Commit Message for Deployment') {
-            steps {
-                script {
-                    gitExecutable = tool 'Git'
-                    commit = sh(returnStdout: true, script: "${gitExecutable}/bin/git log -1 --oneline").trim()
-                    env.GIT_COMMIT_MSG = commit
-                }
+                commitHash = scmVars.GIT_COMMIT
+                echo commitHash
             }
         }
 
@@ -51,7 +43,7 @@ pipeline {
 
         stage('Deploy') {
             steps {
-                sh 'vendor/bin/vapor deploy staging --message=${GIT_COMMIT_MSG}'
+                sh 'vendor/bin/vapor deploy staging --message="Test Jenkins"'
             }
         }