Fixed#731

Added check for local file url starting with `$HOME` / `~` to expand them using `os.path.expanduser`.

Author: toanant

git/cmd.py

@@ -330,6 +330,10 @@ def polish_url(cls, url, is_cygwin=None):
             but git stops liking them as it will escape the backslashes.
             Hence we undo the escaping just to be sure.
             """
+            if url.startswith('$HOME/'):
+                url = url.replace('$HOME/', '~/')
+            if url.startswith('~'):
+                url = os.path.expanduser(url)
             url = url.replace("\\\\", "\\").replace("\\", "/")
 
         return url