Either Publish the shared coordinate from Revit to the point cloud file or get it from the point cloud file.
Publish and Acquire coordinates between Revit and Recap (Point cloud)
Example:
When you start a new project or have an existing one. The first thing to do is to define the shared coordinate where everyone sticks to.
This can be a physical object (survey marker) in the real world like you see below.
When you scan the new or existing location you could set the shared origin and publish it to all other team members.

Note: As this is an idea that is related to Recp and Revit I placed the Idea also on the Revit Idea Forum