Expand description
git worktree wrapper for hermetic per-run workspaces.
The determinism harness uses this to obtain a clean copy of the
workspace rooted at a specific commit, so .gitignored byproducts
(target/, dist/, node_modules/, etc.) from prior runs cannot
leak between builds.
Worktree::add constructs the worktree (detached HEAD at the supplied
commit). Drop is best-effort: it runs git worktree remove --force
against the parent repo so the temporary tree is cleaned up even on
panic. Failure to remove is surfaced via tracing::warn! with the
captured stderr — we never panic during Drop, but silent swallowing
left operators with no signal when the cleanup raced an I/O error.
Operators can still run git worktree prune to reap the stale
administrative entry after such a leak.