use github.repository for checkout

Author: yiyuan-he

.github/workflows/java-eks-otlp-ocb-test.yml

@@ -77,8 +77,8 @@ jobs:
 
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 #5.0.0
         with:
-          # Use the current repository (allows testing from forks)
-          ref: ${{ env.CALLER_WORKFLOW_NAME == 'main-build' && 'main' || github.ref }}
+          repository: ${{ github.repository }}
+          ref: ${{ github.ref }}
           fetch-depth: 0
 
       # We initialize Gradlew Daemon early on during the workflow because sometimes initialization