[root@deployhost openstack-ansible]# git pull
You are not currently on a branch. Please specify which
branch you want to merge with. See git-pull(1) for details.

    git pull <remote> <branch>

[root@deployhost openstack-ansible]# git checkout 18.1.8
HEAD is now at c8d05df... Dropping support of 42.3
[root@deployhost openstack-ansible]# git status
# Not currently on any branch.
nothing to commit, working directory clean
[root@deployhost openstack-ansible]# inventory/dynamic_inventory.py
Traceback (most recent call last):
  File "inventory/dynamic_inventory.py", line 80, in <module>
    output = generate.main(**all_args)
  File "/opt/openstack-ansible/osa_toolkit/generate.py", line 1101, in main
    inventory, inv_path = filesys.load_inventory(config, INVENTORY_SKEL)
  File "/opt/openstack-ansible/osa_toolkit/filesystem.py", line 240, in load_inventory
    raise_if_missing=False)
  File "/opt/openstack-ansible/osa_toolkit/filesystem.py", line 216, in _load_from_json
    dictionary = json.loads(f_handle.read().decode('ascii'))
  File "/usr/lib64/python2.7/json/__init__.py", line 338, in loads
    return _default_decoder.decode(s)
  File "/usr/lib64/python2.7/json/decoder.py", line 366, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib64/python2.7/json/decoder.py", line 384, in raw_decode
    raise ValueError("No JSON object could be decoded")
ValueError: No JSON object could be decoded