How we can setup build process for Multiple parent-child repos using jenkins

Hi We are doing build setup for our project using jenkins, but we are facing issues for build automation as we are having parent-child repos. Below is the scenario for Node build

We are having Common-repo product-repo service-repo

For creating service build we need to have common and product repo to make it happen.

Can anyone help me for getting approaches for that.

via Sagar Babar