fully fetch the repository

Author: jamesc-grafana

.github/workflows/periodic-zizmor.yaml

@@ -65,6 +65,7 @@ jobs:
           repository: ${{ matrix.repository.owner }}/${{ matrix.repository.repo }}
           token: ${{ steps.get-token.outputs.token }}
           path: target
+          fetch-depth: 0
 
       - name: Setup UV
         uses: astral-sh/setup-uv@6b9c6063abd6010835644d4c2e1bef4cf5cd0fca # v6.0.1