Airflow not recognizing DAGs when File storage changed to ADO

Hi,

Following documentation, I am able to run a test DAG to execute DBT job and Fabric activity like refreshing semantic model. However when switched storage to ADO, DAGs are not recognized by Airflow (Not even a hello_world.py). I tried different connection methods (Service Principal, PAT etc) and also verified folder structure in the branch. It is dags-><dag_name>.py.
Anyone got similar experience or any idea if I miss something ?

Thank you!
Nikhil Joy