I am trying to use useMutation for my graphql API but it does not seems to make any call,

here is the code

export async function bulkImport(importRequest: BulkImportRequest): Promise<string> {
  const [postBulkImport, { data }] = useMutation(postBulkImportRequest, {
    variables: importRequest,
  });
  await postBulkImport({ variables: importRequest });
  return data?.requestId;
}

and the I call bulkImport in my React component.

I am trying to rewrite below code using useMutation instead of mutate. Bellow code is working fine.

export async function bulkImport(importRequest: BulkImportRequest): Promise<string> {
  const response = await mutate(postBulkImportRequest, importRequest);
  return response?.data?.postBulkImportRequest?.requestId;
}

I am not sure what I am missing when I use useMutation, I am actually not sure if they are the same.

any advice will be appreciated