fix: Updated workflows to checkout on commit of commit-version-bump (#7217)

Co-authored-by: Michael Genson <71845777+michael-genson@users.noreply.github.com>

.github/workflows/test-backend.yml

@@ -2,6 +2,10 @@ name: Backend Lint and Test
 
 on:
   workflow_call:
+    inputs:
+      ref:
+        required: false
+        type: string
 
 jobs:
   tests:
@@ -43,6 +47,8 @@ jobs:
 
       - name: Check out repository
         uses: actions/checkout@v4
+        with:
+          ref: ${{ inputs.ref || github.sha }}
 
       - name: Set up python
         uses: actions/setup-python@v5