GraphQL type needs information from two APIs, don't want to make unnecessary many requests in resolver

Question

I defined a type that relies on two different API endpoints. Let's call them A and B. For the query getObjects I want to return an array with objects of type SomeType

type SomeType{
   id: String // this comes from A
   url: String // this comes from B
  }

type Query{
       getObjects: [SomeType]
    }

I have a resolver for getObjects that retrieves data from endpoint A and feeds in SomeType to return an array. But I need to resolve the url separately, because the url comes from a endpoint B, right? Thus I write a resolver for the field url. But I don't want to make a request inside of resolver for url as it would mean that I make a request for each object from endpoint A (in my case ~ 18k). endpoint B returns an object with key-value pairs. The key is the id I get from endpoint A, and the value has the url.

const resolvers = {
        SomeType: {
            url: (parent, {}, context) => {
                console.log(parent.id); // parent.id is needed to index the 
                return someurl;
            } 
        },
        Query: {
            getObjects: async () => {
                const mainResponse = await fetch("endpoint A");
                const responseForLogo = await fetch("endpoint B")
    
                const mainData = await mainResponse.json();
                const secondaryData = await responseForLogo.json();
    
                return mainData['data'];
            },
        }
    }

But how can I efficiently get the Url for each object? One way I imagined was to make the request inside the getObjects resolver and store the response object and access it in the resolver for url.

Hope someone can help me with that.