From f72141acb28de4a4f36602b15617e1468e011405 Mon Sep 17 00:00:00 2001
From: Ricardo Carrillo Cruz <ricardo.carrillo.cruz@gmail.com>
Date: Mon, 4 May 2015 15:00:43 +0200
Subject: [PATCH] Checkout branch locally in idempotent manner

---
 .../tasks/clone_system_config_locally.yml        | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/roles/deploy_system_config/tasks/clone_system_config_locally.yml b/roles/deploy_system_config/tasks/clone_system_config_locally.yml
index 3159b21..f444eb8 100644
--- a/roles/deploy_system_config/tasks/clone_system_config_locally.yml
+++ b/roles/deploy_system_config/tasks/clone_system_config_locally.yml
@@ -2,7 +2,21 @@
 # Clone system-config locally in the command machine
 - git: repo="{{ system_config_repo_url }}"
        dest=/tmp/infra-ansible/system-config/production
-       version="{{ system_config_branch }}"
        accept_hostkey=True
        force=True
   tags: clone_system_config_locally
+
+- command: git symbolic-ref --short -q HEAD
+  args:
+    chdir: /tmp/infra-ansible/system-config/production
+  register: checked_out_branch
+
+- command: git show-ref --verify --quiet "{{ system_config_branch }}"
+  register: system_config_branch_exists
+  ignore_errors: True
+
+- command: git checkout -b "{{ system_config_branch }}"
+  when: system_config_branch_exists|failed
+
+- command: git checkout "{{ system_config_branch }}"
+  when: system_config_branch_exists|success and checked_out_branch.stdout != "{{ system_config_branch }}"