fix: generate matrix refs

Author: andhreljaKern

.github/workflows/pi_build.yml

@@ -17,6 +17,7 @@ jobs:
     uses: code-kern-ai/cicd-deployment-scripts/.github/workflows/pi_matrix.yml@dev
     secrets: inherit
     with:
+      checkout_ref: ${{ github.event.pull_request.head.ref }}
       repository: "${{ github.repository_owner }}/refinery-submodule-parent-images"
 
   pi-build:

.github/workflows/pi_matrix.yml

@@ -8,6 +8,11 @@ on:
         required: false
         type: string
         default: ${{ github.repository }}
+      checkout_ref:
+        description: 'Repository ref for actions/checkout'
+        required: false
+        type: string
+        default: ${{ github.event.repository.default_branch }}
       parent_image_type:
         description: 'If specified, "include" only outputs apps associated to this parent image type'
         required: false
@@ -21,6 +26,9 @@ on:
         description: 'List[Dict] of apps associated to parent image types'
         value: ${{ jobs.pi-matrix.outputs.include }}
 
+env:
+  GH_TOKEN: ${{ secrets.GH_TOKEN }}
+
 jobs:
   pi-matrix:
     name: 'Parent Images: Generate Matrix'
@@ -36,7 +44,7 @@ jobs:
         uses: actions/checkout@v4
         with:
           repository: ${{ inputs.repository }}
-          ref: ${{ github.event.pull_request.head.ref || github.event.repository.default_branch }}
+          ref: ${{ inputs.checkout_ref }}
 
       - name: Clone cicd-deployment-scripts
         run: git clone https://oauth2:${{ secrets.GH_TOKEN }}@github.com/code-kern-ai/cicd-deployment-scripts.git

.github/workflows/pi_merge.yml

@@ -17,6 +17,7 @@ jobs:
     uses: code-kern-ai/cicd-deployment-scripts/.github/workflows/pi_matrix.yml@dev
     secrets: inherit
     with:
+      checkout_ref: ${{ github.event.pull_request.base.ref }}
       repository: "${{ github.repository_owner }}/refinery-submodule-parent-images"
 
   pi-update-submodule: