Introduction
If you have an on-premise instance of GitHub, inbound API requests are typically blocked by your network's firewall.
DX provides two different methods for backfilling your onboarding data. Let your DX account representative know which option you'd like to use.
1) Add DX IP addresses to your network
Follow the instructions here. This allows DX to make API requests to your GitHub instance.
2) Run data backfill script from your computer
DX will provide a script to run from your machine. The script fetches historical onboarding data using the GitHub API, and then sends it to DX via unique URL.
Note: This script is written in ruby. Make sure ruby is installed on your machine before running.