Merge_base - is it live on

Hi there,

I’m trying to use the repositories’ merge_base API endpoint for a repo on I’m getting a 404. I’m fairly new to GitLab, and I’m not sure if the 404 is because I’m using the wrong url/params format, or if merge_base support isn’t actually deployed to yet?

merge_base is in the docs:

This is the commit that seemed to merge support for the merge_base endpoint 3 days ago:

How do I tell if the API on should support merge_base already? How do I troubleshoot if it does?

Thank you,