Pipeline experiments

azure-pipelines.yml

@@ -17,16 +17,25 @@ pr:
     - 202???
     - 201???
 
+variables:
+  - name: BUILD_BRANCH
+    ${{ if eq(variables['Build.Reason'], 'PullRequest') }}:
+      value: $(System.PullRequest.TargetBranch)
+    ${{ else }}:
+      value: $(Build.SourceBranchName)
+
 resources:
   repositories:
   - repository: sonic-mgmt-common
     type: github
     name: sonic-net/sonic-mgmt-common
     endpoint: sonic-net
+    ref: b64a80e9253eaf49315aa4bf7dfd4423f848ae80  # there is no 202305 branch in sonic-mgmt-common yet
   - repository: sonic-swss-common
     type: github
     name: sonic-net/sonic-swss-common
     endpoint: sonic-net
+    ref: refs/heads/$(BUILD_BRANCH)
 
 stages:
 - stage: Build
@@ -47,6 +56,14 @@ stages:
       image: sonicdev-microsoft.azurecr.io:443/sonic-slave-bullseye:latest
 
     steps:
+    - script: |
+        echo "BUILD_BRANCH                      = $(BUILD_BRANCH)"
+        echo "Build.Reason                      = $(Build.Reason)"
+        echo "Build.SourceBranch                = $(Build.SourceBranch)"
+        echo "Build.SourceBranchName            = $(Build.SourceBranchName)"
+        echo "System.Pullrequest.TargetBranch   = $(System.Pullrequest.TargetBranch)"
+      displayName: Dump Variables
+
     - checkout: self
       clean: true
       submodules: recursive
@@ -69,7 +86,7 @@ stages:
         pipeline: 1
         artifact: sonic-buildimage.vs
         runVersion: 'latestFromBranch'
-        runBranch: 'refs/heads/master'
+        runBranch: 'refs/heads/$(BUILD_BRANCH)'
       displayName: "Download sonic buildimage"
 
     - task: DownloadPipelineArtifact@2