refine commit script

@@ -23,7 +23,7 @@ work_dir=`(cd ${work_dir}/.. && pwd)`
 product_dir=$work_dir
 
 # allow start script from any dir
-cd $work_dir && work_branch=`git branch -a|grep "*"|awk '{print $2}'` && commit_branch=2.0release && git checkout $commit_branch
+cd $work_dir && work_branch=`git branch|grep "*"|awk '{print $2}'` && commit_branch=2.0release && git checkout $commit_branch
 ret=$ret; if [[ $ret -ne 0 ]]; then echo "switch branch failed. ret=$ret"; exit $ret; fi
 echo "work branch is $work_branch"
 echo "commit branch is $commit_branch"