diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index b6ddb478..8f5b2d93 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -31,7 +31,7 @@ jobs:
       - name: "Checkout"
         uses: actions/checkout@v4
         with:
-          ref: ${{github.event.pull_request.head.ref}}
+          ref: ${{github.event.pull_request.head.sha}}
           repository: ${{github.event.pull_request.head.repo.full_name}}
           fetch-depth: 0
 
@@ -110,7 +110,7 @@ jobs:
       - name: "Checkout"
         uses: actions/checkout@v4
         with:
-          ref: ${{github.event.pull_request.head.ref}}
+          ref: ${{github.event.pull_request.head.sha}}
           repository: ${{github.event.pull_request.head.repo.full_name}}
           fetch-depth: 0
 
@@ -146,4 +146,4 @@ jobs:
       - name: "Run Environment Cleanup"
         shell: pwsh
         run: |
-          ./src/tests/Pester.ps1 -CleanupEnvironment $true
\ No newline at end of file
+          ./src/tests/Pester.ps1 -CleanupEnvironment $true