How do map pixel's ClientID attribute to order details

[davion]

Shopify's pixel provides data on customer journey events. It uses a client ID as one of its unique identifiers. I want to map this client ID to fetch order placement details. Is there a way to link the customer journeys tracked by the Shopify pixel to the orders placed, using some common identifier?

I cannot use order placed event from pixel because shop third party on mechant's store is blocking the flow