Distillation

Date: Sep 8, 2026

• 🟡 (13:31) Tool output: attempting jj workspace add -r @--- ../jj-colocate-validation-target selected root() and created Git worktree ../jj-colocate-validation-target; its working-copy commit was vsqzwsnn 71f38e01 with root parent 00000000. git rev-parse HEAD failed with fatal: ambiguous argument 'HEAD', indicating an unborn Git HEAD.
• 🟡 (13:31) Assistant explained that @--- resolved to root(), so the unborn Git HEAD was expected; planned a rerun using actual non-tip first revision @--, expecting a detached Git HEAD equal to that revision and different from the main worktree’s HEAD.
• 🟡 (13:31) Tool output from exact non-tip validation: jj workspace add -r @-- ../jj-colocate-validation-exact created a Git worktree and workspace with working-copy commit uyyumsns 2a1e3376, parent lkwssztq 737ae9c9 (first). target=737ae9c9675ff6d01211efafde45042fa90948b7; main HEAD=83fa2350bf8a30ef6e665351a67136bc28c8bf58 (second); exact worktree HEAD=737ae9c9675ff6d01211efafde45042fa90948b7, detached. Git worktrees also listed: primary /home/byk/Code/jj-colocate-validation at detached 83fa2350; ../jj-colocate-validation-target at unborn 0000000000000000000000000000000000000000 on refs/jj/root; and ../jj-colocate-validation-workspace at detached 737ae9c9.
• 🟡 (13:31) Tool output listed registered JJ workspaces: default at . with commit nlnupxtw fe95f74c (third); jj-colocate-validation-exact at ../jj-colocate-validation-exact with uyyumsns 2a1e3376; jj-colocate-validation-target at ../jj-colocate-validation-target with vsqzwsnn 71f38e01; and jj-colocate-validation-workspace at ../jj-colocate-validation-workspace with ommvpsmo 358eacef.
• 🟡 (13:31) Assistant concluded non-tip validation passed: the new exact worktree’s detached Git HEAD matched requested first revision 737ae9c9 and differed from primary worktree’s second revision 83fa2350; planned removal of disposable JJ workspaces/directories and verification of installed configuration.
• 🟡 (13:31) Tool task status: “Validate inherited colocation with a requested revision” completed (high); “Remove disposable validation workspace” in progress (medium); “Report installed version and workflow” pending (low).
• 🟡 (13:32) Tool output: removed Git worktrees for /home/byk/Code/jj-colocate-validation-exact, /home/byk/Code/jj-colocate-validation-target, and /home/byk/Code/jj-colocate-validation-workspace; only default: . nlnupxtw fe95f74c (empty) third remained registered.
• 🟡 (13:32) Tool output: installed JJ version was jj 0.45.1-2133040a8b99df306b3b6a199608b5ae669ae8a6; global git.colocate evaluated to true; jj workspace add help listed --colocate and --no-colocate.
• 🟡 (13:32) Tool task status: all tasks completed—requested-revision colocation validation (high), disposable-workspace removal (medium), and installed-version/workflow report (low).
• 🟡 (13:32) Assistant reported installed upstream JJ revision 2133040a8b99df containing PR #9941; stated that with global git.colocate = true, new workspaces created from an already colocated repository create matching Git worktrees by default, while --colocate and --no-colocate remain available overrides.