message: Fix format check step
diff: @@ -40,7 +40,7 @@ jobWrapper {
  }
  targetSHA1 = 'NONE'
  if (isPullRequest) {
  - targetSHA1 = sh(returnStdout: true, script: "git merge-base origin/${targetBranch} HEAD").trim()
  + targetSHA1 = sh(returnStdout: true, script: "git fetch origin && git merge-base origin/${targetBranch} HEAD").trim()
  }
  }
  