It’s a downstream patch.
Changes are recorded, then applied to the latest upstream version (Firefox) then packaged and sent as an update (LibreWolf)
Changes are recorded, then applied to the latest upstream version (Firefox) then packaged and sent as an update (LibreWolf)
Or how does the semantics of patch/changes/update differ in any way from maintaining a fork? The packaging has nothing to do with this. It may not be a well-maintained fork, the maintainers might not see themselves capable of adding features and bugfixes on their own, but a fork is a fork.
It's a shame that GitHub messed up this term by calling any clone of a repository a "fork".
https://en.m.wikipedia.org/wiki/LibreWolf
It may just be semantics though.