LOAD CSV from Gitlab repo protected with SSH key?

Using Neo4j Desktop 1.3.8, and engine 4.1.1. Trying to share my work with other colleagues internally, and having trouble loading data through LOAD CSV from our internal Gitlab site, with requires authentication. I have configured SSH keys for the repo, but when I use LOAD CSV in cypher and specify the URL, I get errors indicating it couldn't authenticate. How do I specify the URL for the CSV files if they are in a protected repo?

I either need Neo4j to authenticate against Active Directory or pass SSH keys...

I have configured a deployment token in the Gitlab repo, and following the instructions to pass that username and password, but it's still not working.