Try this to not do koji mount in stg

inventory/group_vars/buildvm-stg

@@ -9,7 +9,6 @@ ks_repo: http://10.5.126.23/pub/fedora/linux/releases/20/Fedora/x86_64/os/
 nm: 255.255.255.0
 gw: 10.5.126.254
 dns: 10.5.126.21
-eth0_ip: 10.5.126.14
 virt_install_command: /usr/sbin/virt-install -n {{ inventory_hostname }} -r {{ mem_size }}
                  --disk bus=virtio,path={{ volgroup }}/{{ inventory_hostname }}
                  --vcpus={{ num_cpus }}  -l {{ ks_repo }} -x
@@ -22,7 +21,3 @@ virt_install_command: /usr/sbin/virt-install -n {{ inventory_hostname }} -r {{ m
 # for systems that do not match the above - specify the same parameter in
 # the host_vars/$hostname file
 host_group: kojibuilder
-
-vmhost: virthost16.phx2.fedoraproject.org
-datacenter: phx2
-

playbooks/groups/buildvm.yml

@@ -33,7 +33,7 @@
 
   roles:
   - base
-  - { role: nfs_client, when: not inventory_hostname.startswith('arm'), mnt_dir: '/mnt/fedora_koji',  nfs_src_dir: 'fedora_koji' }
+  - { role: nfs_client, when: not inventory_hostname.startswith('arm') or env != "staging", mnt_dir: '/mnt/fedora_koji',  nfs_src_dir: 'fedora_koji' }
   - koji_builder
 
   tasks: