Access Certain Production Data from Testing Environment

I usually run my tests with an in-memory sqlite database. However, there is one production database that has information I need to properly perform certain tests within the testing environment. How can I get access to that production data if I specify a different database connection for my testing environment in phpunit.xml?

It's not a huge dataset, around a hundred records. But it's frequently used across multiple tests.

Possible Ideas

• Copy the database using a seeder?
• When initiating the test suite, make this one db actually call the real one?