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Jujutsu’s standout difference is its operation log: it records repository-changing operations along with a snapshot of repository state after each one. That makes it straightforward to inspect what changed, undo the latest operation, reverse a selected earlier operation, or restore the repository to a past state. Git also has recovery tools; the distinction is that Jujutsu makes operation-level recovery a visible, first-class workflow.
What Jujutsu’s operation log records
jj op log is a timeline of changes to repository state, not merely a list of source-code commits. Each operation has a snapshot of the repository view, including bookmark and tag positions, Git refs in Git-backed repositories, repository heads, and the working-copy commit for each workspace. Operation records also include parent-operation links and metadata such as timestamp, username, hostname, and description. Jujutsu’s operation-log documentation explains this model.
This matters because a source-code commit history and a repository-operation history answer different questions. A commit shows a version of project content; an operation records a change to repository state, which can include moving references or changing the working copy.
How the three recovery commands differ
| Command | What it changes | When to use it |
|---|---|---|
jj undo |
Creates an inverse of the latest operation by default. | To reverse the most recent repository-changing action. |
jj op revert <operation-id> |
Creates an inverse of the selected operation. | To reverse an earlier operation without first undoing every action after it. |
jj op restore <operation-id> |
Creates an operation that restores repository state to the selected operation’s snapshot. | To make the repository match a past state, effectively undoing later operations. |
The command syntax and behavior above are documented in the Jujutsu v0.27.0 CLI reference. Check the reference for the version you have installed before relying on version-specific options.
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Find the operation before choosing a recovery scope
- Inspect the timeline: run
jj op logand identify the operation that changed the state you want to recover. - Choose the narrowest suitable action: use
jj undofor the latest operation,jj op revert <operation-id>for a selected operation, orjj op restore <operation-id>to return repository state to a selected snapshot. - Review remote-tracking state before restoring: in the v0.27.0 CLI reference,
jj op restorerestores repository and remote-tracking state by default. It warns not to restore remote-tracking bookmarks if you want to push after the undo. The reference marks--whatexperimental, so verify exact behavior for your installed version.
For inspection at a historical operation, the operation-log documentation describes using --at-op. The CLI reference notes that jj op log normally snapshots the working copy and reconciles divergent operations. For non-mutating inspection, its documented version-specific example is jj op log --at-op=@ --ignore-working-copy.
Why the working copy fits this model
Jujutsu represents the working copy as a commit and snapshots working-copy changes before almost all commands. Commands operate on commits in the repository, so changes that have not been turned into a conventional named commit can still be represented in repository state and associated with operations. This reduces the need to think of recovery as a separate stash-first procedure. See the working-copy documentation.
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Jujutsu and Git recovery: a practical comparison
| Aspect | Jujutsu | Git |
|---|---|---|
| History emphasized | Repository operations with snapshots of repository view. | Workflows commonly center on commits and refs. This comparison does not establish that Git lacks recovery mechanisms. |
| Recovery choices covered here | Undo the latest operation, reverse a selected operation, or restore a past repository state. | No detailed Git reflog comparison is established by the official sources cited here. |
| Uncommitted work model | The working copy is represented as a commit and is usually snapshotted before commands. | Not stated in the cited Jujutsu documentation. |
| Git interoperability | Can use a regular Git repository and collaborate with Git users, with documented compatibility limits. | Not applicable. |
In short, the difference is not “Jujutsu can undo, Git cannot.” Jujutsu presents an explicit repository-operation timeline and recovery commands that target that timeline. The official sources used here do not provide enough detail to compare those commands feature-for-feature with Git’s reflog or other recovery workflows.
Git interoperability has limits
Jujutsu can store commits in a regular Git repository and work alongside Git users, but compatibility is not complete. The project’s Git compatibility documentation describes Git configuration and tags as partially supported, while hooks and .gitattributes are unsupported in that documentation. Because this page is on the project’s main branch and may change, check it against the version and workflow you plan to use.
Recovery is not a guarantee against every loss
Operation history is powerful, but it does not make every object permanently recoverable. The CLI reference explains that abandoned operations, commits, and other unreachable objects can later be garbage-collected with jj util gc. Treat the operation log as a practical recovery mechanism, not a substitute for backups or a promise that unreachable data will remain indefinitely.
Is Jujutsu a fit for a Git user?
Jujutsu’s project README describes it as “an experimental version control system” and cautions that work-in-progress features, suboptimal user experience, or workflow gaps may make it unsuitable for a particular user. Its operation-level undo can be attractive if you often need to inspect and reverse repository changes, but that alone does not make it an automatic upgrade from Git. Consider your tooling needs and compatibility requirements alongside the recovery model. Jujutsu project README.
Quick Recap
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