fix(git): Relax the branch regex

It's a complicated pattern: https://stackoverflow.com/a/12093994 so it
may be best to just fetch whatever git status returns (until the end of
line)

Author: tony

libvcs/git.py

@@ -64,7 +64,7 @@ def extract_status(value):
             branch.head
             [\W]+
             (?P<branch_head>
-                [/.\w-]*
+                .*
             )
             
         )?
@@ -74,7 +74,7 @@ def extract_status(value):
             branch.upstream
             [\W]+
             (?P<branch_upstream>
-                [/.\w-]*
+                .*
             )
         )?
         (