Integration between a repository and any forked repositories is not currently supported for any SCM. You can setup forked repositories as separate projects on CodeShip, but any builds for the forked repository will not link back to the parent repository.
There is support of GitHub Enterprise, GitLab Community Edition, GitLab Enterprise Edition and Bitbucket Server products.
You can read the self-hosted Git documentation to learn more.
If you use self-hosted git servers, we have a static IP addresses feature, which allows you to provide access to your git server, from just eight specific IP addresses. See Static IP Addresses documentation for more details.
If you want to see which services you’re connected to, or perhaps ensure your username is registered so your builds show up on the personal dashboard, you can go to your Connected Services page. This allows you to add more connections or update/disable your existing connections.
Note: Before disconnecting a service, you should check to see if it’s
being used by a project to communicate with your git server. The account
used to connect to the git server is shown on the project’s
settings (Project → Project Settings → General).