DAG: I need both gitSync and volume persistence

[achovelon]

Hello,
I currently using Airflow with Open-Metadata as my pipeline ingestion tool. For this I use DAG persistent volume and it works fine.
For a second use of Airflow I would like to push my own DAGs from git and on several documentations it's mentioned that it's possible to enable both DAG gitSync and volume persistence enabled for example this doc but it's disabled on the chart :
https://github.com/airflow-helm/charts/blob/main/charts/airflow/templates/_helpers/validate-values.tpl#L119

Is it a mis-understanding from my side to use both DAG gitSync and persistence volume ? Could you help me to understand how to manage my use of Airflow for Open-Metadata and gitSync ?