Git: Update current branch after some operations

... to refresh the branch view upstream status.

No need for a full model update here, only the current
branch is influenced.

Change-Id: I6bd17a841988b36221e5015a5858071d33a7b5e5
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/git/branchview.cpp

@@ -169,6 +169,11 @@ void BranchView::refresh(const QString &repository, bool force)
         VcsBase::VcsOutputWindow::appendError(errorMessage);
 }
 
+void BranchView::refreshCurrentBranch()
+{
+    m_model->refreshCurrentBranch();
+}
+
 QToolButton *BranchView::addButton() const
 {
     return m_addButton;