Provide REST API to update the base URL

As an administrator I want to automatically refresh our test instance of Confluence by pulling data from production. After doing some cleanup like removing SMTP server configuration and so on I want to update the base URL to the predefined URL for this test instance.

In JIRA there is such an API available but not in Confluence.

Back in 2014 another user asked this in the Community.

Please provide this API so that the process of refreshing test instances can be automated further.