How to identify return with restocked items?

We are currently using the GraphQL Admin API to import Orders from Shopify.
We need to tracking every inventory adjustments related to a specific order, including restocks.
We are currently trying to detect wether or not a restock was done on the order’s returns.
Is there a way to detect that ?

When a refund is associated with the return, we can use refunds > refundLineItems > restocked [bool].
However, when the return does not have a refund, we do not see a “restocked” field in the doc.

Thank you!