Comment 3 for bug 1970244

This has been successfully verified.

root@j1:~# apt policy software-properties-common
software-properties-common:
  Installed: 0.99.22.1
  Candidate: 0.99.22.1
  Version table:
 *** 0.99.22.1 500
        500 http://archive.ubuntu.com/ubuntu jammy-proposed/main amd64 Packages
        100 /var/lib/dpkg/status
     0.99.22 500
        500 http://archive.ubuntu.com/ubuntu jammy/main amd64 Packages
        root@j1:~# apt policy keystone-common

root@j1:~# sudo add-apt-repository cloud-archive:zed-proposed --yes
...

root@j1:~# sudo add-apt-repository cloud-archive:zed --yes
...

root@j1:~# sudo apt install keystone-common --yes
...

root@j1:~# apt policy keystone-common
keystone-common:
  Installed: 2:21.0.0+git2022050409.884f88148-0ubuntu1~cloud0
  Candidate: 2:21.0.0+git2022050409.884f88148-0ubuntu1~cloud0
  Version table:
 *** 2:21.0.0+git2022050409.884f88148-0ubuntu1~cloud0 500
        500 http://ubuntu-cloud.archive.canonical.com/ubuntu jammy-proposed/zed/main amd64 Packages
        500 http://ubuntu-cloud.archive.canonical.com/ubuntu jammy-updates/zed/main amd64 Packages
        100 /var/lib/dpkg/status
     2:21.0.0-0ubuntu1 500
        500 http://archive.ubuntu.com/ubuntu jammy/main amd64 Packages