In using the rule "OG new content notification," (rules_og_new_content) how can I insert the group name in the outgoing email In using the rule OG new content notification (admin/config/workflow/rules/reaction/manage/rules_og_new_content) for a site using Organic groups. However, I'd like add in the name (and URL) of the parent group. However, I'm not seeing these options in the tokens ("replacement values").

The Content Type in question has the field og_group_ref for which I'm trying to target. 



What I've tried so far (update):

On a dev instance, as per Pierre's recommendation below, I've added the following 'fetch entity' to the rule. 




But the email comes in blank, without title on the subject line
Add Action >> Get group members from group audience >> node

Add Loop >> node:og-group-ref


Add Loop inside loop >> group-members >> rename list_item to list_item2


Add Action >> Fetch entity by property >> User >> Mail >> list-item2:mail
Add Action >> Fetch entity by property >> OG Memembership >> field_name >> list-item:title >> rename entity_fetched to entity_fetched2
Add Action >> Send Mail >> list-item2:mail >> list-item:title



End Result:



(click image to enlarge)