如何将仓库信息字典列表转换为两种指定结构的字典格式？

结构一（数组嵌套结构） #

repolist:
  - org: rhosp-rhel8
    repos: 
        - name: openstack-zaqar-base
          registry: registry.redhat.io
        - name: openstack-zaqar-wsgi
          registry: registry.redhat.io
  - org: rhceph
    repos: 
      - name: rhceph-4-dashboard-rhel8
        registry: registry.redhat.io

结构二（键值映射结构） #

repolist:
  rhosp-rhel8:
    - name: openstack-zaqar-base
      registry: registry.redhat.io
    - name: openstack-zaqar-wsgi
      registry: registry.redhat.io
  rhceph:
    - name: rhceph-4-dashboard-rhel8
      registry: registry.redhat.io

内容的提问来源于stack exchange，提问作者ptselios