Atelier & GIT work principles across multiple servers

Hi,

Trying out Atelier , and need to understand what working principles are best to follow.

Scenario I have a local Cache Instance for development that is linked to a GIT repository for Namespace "ABC"

I have got a local working directory /workingdir/ABC 

I have checked out branch "a"

So at this point I need to connect to a dev server that has this Namespace "ABC" but currently the  branch that is on this server is "b"

Do I create a new workspace and new project for this connection to the dev server.
And also an addisional GIT project with different local workspace /folders.

What is good practice to handle this.

Also if I connect to a instance, and previously when I worked on that project I had checked out branch "a" . In the mean time I disconnected another developer connected and he checked out branch "b" and synced the source with the instance.

What will the behavior be when I connect again , will my Atelier/Git now that that source on the server is now branch "b"

, or how is this handled?

Regards

Thomas