Comment 4 for bug 1882583

Verified successfully:

root@f1:~# apt policy software-properties-common
software-properties-common:
  Installed: 0.98.9.1
  Candidate: 0.98.9.1
  Version table:
 *** 0.98.9.1 500
        500 http://archive.ubuntu.com/ubuntu focal-proposed/main amd64 Packages
        100 /var/lib/dpkg/status
     0.98.9 500
        500 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages

root@f1:~# sudo add-apt-repository cloud-archive:victoria --yes
sudo: setrlimit(RLIMIT_CORE): Operation not permitted
Reading package lists...
Building dependency tree...
Reading state information...
The following package was automatically installed and is no longer required:
  libfreetype6
Use 'sudo apt autoremove' to remove it.
The following NEW packages will be installed:
  ubuntu-cloud-keyring
0 upgraded, 1 newly installed, 0 to remove and 19 not upgraded.
Need to get 5848 B of archives.
After this operation, 22.5 kB of additional disk space will be used.
Get:1 http://archive.ubuntu.com/ubuntu focal/main amd64 ubuntu-cloud-keyring all 2020.02.11.2 [5848 B]

Fetched 5848 B in 2s (3046 B/s)
Selecting previously unselected package ubuntu-cloud-keyring.
(Reading database ... 31250 files and directories currently installed.)
Preparing to unpack .../ubuntu-cloud-keyring_2020.02.11.2_all.deb ...
Unpacking ubuntu-cloud-keyring (2020.02.11.2) ...
Setting up ubuntu-cloud-keyring (2020.02.11.2) ...
Hit:1 http://security.ubuntu.com/ubuntu focal-security InRelease
Hit:2 http://archive.ubuntu.com/ubuntu focal InRelease
Hit:3 http://archive.ubuntu.com/ubuntu focal-updates InRelease
Hit:4 http://archive.ubuntu.com/ubuntu focal-proposed InRelease
Hit:5 http://archive.ubuntu.com/ubuntu focal-backports InRelease
Ign:6 http://ubuntu-cloud.archive.canonical.com/ubuntu focal-updates/victoria InRelease
Get:7 http://ubuntu-cloud.archive.canonical.com/ubuntu focal-updates/victoria Release [7811 B]
Get:8 http://ubuntu-cloud.archive.canonical.com/ubuntu focal-updates/victoria Release.gpg [836 B]
Get:9 http://ubuntu-cloud.archive.canonical.com/ubuntu focal-updates/victoria/main amd64 Packages [18.2 kB]
Fetched 26.9 kB in 31s (865 B/s)
Reading package lists... Done

root@f1:~# sudo add-apt-repository cloud-archive:victoria-proposed --yes
sudo: setrlimit(RLIMIT_CORE): Operation not permitted
Reading package lists...
Building dependency tree...
Reading state information...
ubuntu-cloud-keyring is already the newest version (2020.02.11.2).
The following package was automatically installed and is no longer required:
  libfreetype6
Use 'sudo apt autoremove' to remove it.
0 upgraded, 0 newly installed, 0 to remove and 19 not upgraded.
Hit:1 http://security.ubuntu.com/ubuntu focal-security InRelease
Hit:2 http://archive.ubuntu.com/ubuntu focal InRelease
Ign:3 http://ubuntu-cloud.archive.canonical.com/ubuntu focal-proposed/victoria InRelease
Hit:4 http://archive.ubuntu.com/ubuntu focal-updates InRelease
Ign:5 http://ubuntu-cloud.archive.canonical.com/ubuntu focal-updates/victoria InRelease
Hit:6 http://archive.ubuntu.com/ubuntu focal-proposed InRelease
Hit:7 http://archive.ubuntu.com/ubuntu focal-backports InRelease
Get:8 http://ubuntu-cloud.archive.canonical.com/ubuntu focal-proposed/victoria Release [7849 B]
Hit:9 http://ubuntu-cloud.archive.canonical.com/ubuntu focal-updates/victoria Release
Get:10 http://ubuntu-cloud.archive.canonical.com/ubuntu focal-proposed/victoria Release.gpg [836 B]
Get:12 http://ubuntu-cloud.archive.canonical.com/ubuntu focal-proposed/victoria/main amd64 Packages [31.6 kB]
Fetched 40.3 kB in 2s (16.6 kB/s)
Reading package lists... Done

root@f1:~# apt policy python3-oslo.utils
python3-oslo.utils:
  Installed: (none)
  Candidate: 4.2.0-0ubuntu2~cloud0
  Version table:
     4.2.0-0ubuntu2~cloud0 500
        500 http://ubuntu-cloud.archive.canonical.com/ubuntu focal-proposed/victoria/main amd64 Packages
     4.2.0-0ubuntu1~cloud0 500
        500 http://ubuntu-cloud.archive.canonical.com/ubuntu focal-updates/victoria/main amd64 Packages
     4.1.1-0ubuntu1 500
        500 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages

root@f1:~# sudo apt install python3-oslo.utils=4.2.0-0ubuntu1~cloud0
...

root@f1:~# apt policy python3-oslo.utils
python3-oslo.utils:
  Installed: 4.2.0-0ubuntu1~cloud0
  Candidate: 4.2.0-0ubuntu2~cloud0
  Version table:
     4.2.0-0ubuntu2~cloud0 500
        500 http://ubuntu-cloud.archive.canonical.com/ubuntu focal-proposed/victoria/main amd64 Packages
 *** 4.2.0-0ubuntu1~cloud0 500
        500 http://ubuntu-cloud.archive.canonical.com/ubuntu focal-updates/victoria/main amd64 Packages
        100 /var/lib/dpkg/status
     4.1.1-0ubuntu1 500
        500 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages

root@f1:~# sudo apt install python3-oslo.utils=4.2.0-0ubuntu2~cloud0

root@f1:~# apt policy python3-oslo.utils
python3-oslo.utils:
  Installed: 4.2.0-0ubuntu2~cloud0
  Candidate: 4.2.0-0ubuntu2~cloud0
  Version table:
 *** 4.2.0-0ubuntu2~cloud0 500
        500 http://ubuntu-cloud.archive.canonical.com/ubuntu focal-proposed/victoria/main amd64 Packages
        100 /var/lib/dpkg/status
     4.2.0-0ubuntu1~cloud0 500
        500 http://ubuntu-cloud.archive.canonical.com/ubuntu focal-updates/victoria/main amd64 Packages
     4.1.1-0ubuntu1 500
        500 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages