Change sources

Fettle can compare uncommitted working-tree changes, a local branch against its inferred base, one Saggar agent turn, or a GitHub pull request. Local comparisons read Git without changing it. Pull requests are read through the GitHub CLI and aren't fetched into your clone.

When the checked-out branch is the local default branch, Changes since uses its remote-tracking upstream when one exists. This keeps local commits on main reviewable before they're pushed. Without an upstream, Fettle falls back to the local default branch and shows uncommitted work in the working-tree target.

The chronological home feed mixes these sources into one queue. The project browser remains available when you need to choose a repository or comparison explicitly.