The fork operation accepts a group id or a namespace. For a given namespace I would wish the missing groups would be created. For example: * Existing structure: `group/subgroup` * Non existing group: `newgroup` `/api/v4/projects/1234567/fork?namespace=group%2Fsubgroup%2Fnewgroup` This should fork the project `1234567` into `group/subgroup/newgroup` where the subgroup `newgroup` is also added. If `newgroup` already existed this should work as always.