In case you are publishing artifacts and you want to ensure that your changelogs are fetchable by `Renovate`, you need to configure the [scm section](https://maven.apache.org/scm/git.html) on their `pom.xml` file.
When opening a Pull Request `Renovate` uses the top level `url` property to determine the homepage of your project and shows it inside the Pull Request.
To customize you can set it inside your `pom.xml`.