Drag down all branches in docs build.

Author: alexmillane

.github/workflows/premerge.yml

@@ -114,6 +114,9 @@ jobs:
     steps:
       - name: Checkout Code
         uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          fetch-tags: true
       - name: Set up Python
         uses: actions/setup-python@v5
         with: