na debiane cez apt pinning takto:
v prvom kroku nastavis na vsetky baliky prio 1
v druhom kroku nastavis prio 100 na balik ktory chces instalovat. v mojom pripade na ff zo sid repa.

# cat /etc/apt/preferences.d/sid-ff-only
Package: *
Pin: release n=sid
Pin-Priority: 1

Package: firefox
Pin: release n=sid
Pin-Priority: 100


na fedore mas na tento ucel includepkgs a excludepkgs
tak ako to chces ty; teda instalovat len specificky balik, pouzijes includepkgs
mohlo by to vyzerat asi takto

# cat /etc/yum.repos.d/brave-browser.repo
[brave-browser]
name=Brave Browser
enabled=1
autorefresh=1
baseurl=https://brave-browser-rpm-release.s3.brave.com/$basearch
includepkgs=brave-browser


e:typo

apt pinning