Make sure switch_branch uses the right __head

"switch_branch" needs to use the global variable __head, not a local
version.

Signed-off-by: Chuck Lever <cel@netapp.com>

diff --git a/stgit/git.py b/stgit/git.py
index 58a4841..33702cb 100644 (file)
--- a/stgit/git.py
+++ b/stgit/git.py
@@ -296,6 +296,8 @@ def create_branch(new_branch, tree_id = None):
 def switch_branch(name):
     """Switch to a git branch
     """
+    global __head
+
     new_head = os.path.join('refs', 'heads', name)
     if not branch_exists(new_head):
         raise GitException, 'Branch "%s" does not exist' % name