- Navigate to Tools->Options->Environment->Keyboard
- Type view.tfssource in "show commands containing" criteria and we can see respective command listed in the results list
- Place cursor in "Press shortcut keys" text box and type in the key that you like to use as shortcut (make sure that, you are providing a key which is not currently being used) and click on Assign and OK buttons.
Now we can directly open the Source control by hitting our custom shortcut key. We can follow similar steps to have our own custom shortcut keys for any feature that has an associated command.