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Yes, two Claude Code sessions can work on the same repository, but they should not edit the same checkout at the same time. A shared working directory gives both sessions access to the same files; Git worktrees provide separate working directories for parallel tasks. If an edit is corrupted, inspect and preserve the changes first, then restore only the affected path from a source you know is correct.
The “60-line fix” in this headline is an illustrative scenario, not a verified incident or documented result. Anthropic’s CLI and Git documentation support the recovery and isolation workflow below, but do not substantiate a particular 60-line repair.
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Can two Claude Code sessions work in the same repository?
They can, but two sessions using one checkout share the same working files. If both edit the same path, one session can overwrite or complicate the other’s changes. Separate Claude Code conversations do not create separate copies of your code.
For concurrent tasks, use separate Git worktrees and, where practical, separate branches. Git describes worktrees as “multiple working trees attached to the same repository.” Each worktree has its own working directory, `HEAD`, and index, while repository data is shared. They are linked worktrees, not independent clones. Git worktree documentation
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| Setup | Working files | Branch and repository considerations |
|---|---|---|
| Two sessions in one checkout | Both use the same directory and can edit the same files. | Both operate in the checkout’s current branch and index, so coordinate file ownership and inspect changes often. |
| Separate linked worktrees | Each task has its own working directory. | Worktrees can use separate branches, but share repository data. Review and integrate changes deliberately; clean a worktree before removing it. |
Worktrees reduce direct overlap in working files; the documentation does not establish a measured reduction in conflicts or a productivity gain.
How do you recover a corrupted edit in Git?
Do not start with a broad reset or restore. First stop further edits to the affected path and determine whether useful work exists in the working tree, the index, or both. The index holds staged changes; the working tree holds files as currently edited.
- Pause both sessions on the affected path. Avoid letting either session make additional edits while you assess the state.
- Preserve anything potentially valuable. Copy the file or make another recoverable checkpoint before running a command that could replace it.
- Inspect Git’s view. Run
git status, then review the relevant changes withgit diff -- path/to/file. If staging may be involved, inspect it separately withgit diff --cached -- path/to/file. - Choose the correct source. Confirm whether the desired version is in `HEAD`, the index, another commit, or a saved copy. Do not assume `HEAD` is correct just because an edit looks corrupted.
- Restore only the damaged path, if appropriate. If `HEAD` is the wanted version and you have preserved any needed local lines, use the path-scoped command below.
git diff -- path/to/file
git restore --source=HEAD --worktree -- path/to/fileThis command replaces the working-tree copy of that path with the version from `HEAD`; it discards uncommitted changes to that path. Reconcile or save wanted lines first. Git’s git-restore documentation for version 2.50.0 explains that restore can target the working tree, the index, or both: by default, working-tree restoration uses the index as its source, while `–staged` restores the index from `HEAD` unless another source is specified. Use `–staged` only when you intentionally mean to change the index.
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A linked worktree gives a separate task a separate directory, so an agent working there does not edit the same working files as a session in your original checkout. The Git manual shows this pattern for an urgent fix while other development continues.
git worktree add -b emergency-fix ../temp <base-branch>
# Work in ../temp, review and commit the fix, then return to the original tree.
git worktree remove ../tempReplace <base-branch> with the branch or commit you intend to use as the starting point. Review the new branch’s changes before integrating them into other work. The shared repository still requires coordination, and worktree removal is not a substitute for preserving changes: Git accepts removal only for a clean worktree by default. Commit or otherwise save useful work before removing it. See Git’s worktree manual.
Can you resume a Claude Code session?
Yes. Anthropic’s CLI reference documents continuing the most recent conversation with claude -c and resuming a session by ID with claude -r <session-id>. Anthropic’s Claude Code CLI reference
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Session continuity helps you return to a conversation, but it is not a durable record of code state. Anthropic recommends Git for tracking changes across sessions, including commits or checkpoints that can be restored. Its prompting guidance says, “Git provides a log of what’s been done and checkpoints that can be restored.” Anthropic’s prompting best practices
When resuming or starting a task, state the worktree path, target branch, files the session may edit, and expected result. Then verify the actual code with Git status and diffs; do not rely on a session’s recollection as proof of what changed.
Quick Recap
What prevents another overlapping edit?
- Assign one session ownership of a given path at a time when sharing a checkout.
- Use a separate worktree and branch for a parallel task that needs to edit code independently.
- Make small, reviewable commits or checkpoints so recovery has a known source.
- Before restoring, identify whether the version to preserve is in the working tree, index, or a commit.
- Before removing a worktree, confirm it is clean and that useful work has been committed or saved.
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