Add fetch step in the build pipeline (#360)

* Update ci-build-production.yml for Azure Pipelines

* using checkout step

.azure-pipelines/ci-build-production.yml

@@ -16,7 +16,9 @@ pool:
 
 steps:
 
-- script: git checkout main
+- checkout: self
+  displayName: checkout main
+
 - template: ./common-templates/security-pre-checks.yml
 - task: CopyFiles@2
   displayName: 'Copy Files to staging directory'