Store API URL in the revision table

Will be important once we get into SLE

lib/git.py

@@ -23,7 +23,6 @@ class Git:
     def is_open(self):
         return self.repo is not None
 
-    # TODO: Extend it to packages and files
     def exists(self):
         """Check if the path is a valid git repository"""
         return (self.path / ".git").exists()