We have different ways to get information about SCR sources. Unfortunately none of them are using Exchange Management Console.
Using only the native cmdlet we can get this information running the following cmdlet:
Get-StorageGroup | select Name,StandbyMachines and you will have a list of all Storage groups and their respective SCR sources.
There is a script to help us out, the script is called GetSCRSources.ps1 and it can be found under scripts folder. You just need run ./GetScrSources.ps1 and we will receive a list with only the Storage Group(s) that are being replicated to the current server.
You can also run ./GetSCRSources.ps1 <Servername> to validate SCR sources in a specific server.