Comment 27 for bug 1881401

A Reddit user here https://www.reddit.com/r/Ubuntu/comments/jcx9y9/my_64_year_old_mom_upgraded_from_1804_to_2004_by/
has found the following solution:

In 20.04 hplip is broken for many HP Printers including mine. This is what I did to get it working again (basically using 20.10 hplip packages).
$ sudo apt purge hplip*
$ sudo apt autoremove
Download following packages from https://packages.ubuntu.com/groovy/hplip . Now the version number might be updated a little.
hplip_3.20.5+dfsg0-3build1_amd64.deb
hplip-data_3.20.5+dfsg0-3build1_all.deb
libhpmud0_3.20.5+dfsg0-3build1_amd64.deb
libsane-hpaio_3.20.5+dfsg0-3build1_amd64.deb
printer-driver-hpcups_3.20.5+dfsg0-3build1_amd64.deb
python3-pexpect_4.6.0-4_all.deb
python3-pil_7.2.0-1_amd64.deb
python3-reportlab_3.5.47-1_all.deb
python3-reportlab-accel_3.5.47-1_amd64.deb
$ sudo dpkg -i *.deb
Now auto install all dependencies
$ sudo apt -f install

So, basically, they installed hplip 3.20.5 for Ubuntu 20.10 on Ubuntu 20.04. Is there a way to move those packages to Ubuntu 20.04 repositories?