Fix/possible infinite inherit

[JakeGinnivan]

No description provided.

[JakeGinnivan]

I have tried writing tests for this, I can only reproduce on my build server and cannot figure how I end up with these logs:

[15:55:31][Step 2/2]   INFO [12/04/17 7:55:31:84] Found possible parent branches: 
[15:55:31][Step 2/2]   WARN [12/04/17 7:55:31:84] Failed to inherit Increment branch configuration, no branches found.
[15:55:31][Step 2/2] 
[15:55:31][Step 2/2] Falling back to origin/master branch config
[15:55:31][Step 2/2]   INFO [12/04/17 7:55:31:84] No branch configuration found for branch origin/master, falling back to default configuration

However TeamCity is setting up the repo it's causing an issue when building BitBucket pull requests /merge target.