Claude Code 2.1.270 fixes read-only Git permission prompts: verify long-session recovery

Quick answer

Claude Code 2.1.270 fixes a regression introduced in 2.1.269: read-only Git commands run through Bash could unexpectedly ask for permission after a session had been running for a while. If that prompt interrupted a long coding or review workflow, upgrade to the exact 2.1.270 package, confirm the resolved binary, and replay a representative long-session canary before restoring unattended work.

Do not validate the fix by choosing “allow everything.” Prove that ordinary inspection commands continue under the intended policy while a mutating Git command remains denied or asks for approval. Keep both outcomes in one recovery record.

Anthropic's release note does not identify a precise timeout or list every affected Git subcommand. Treat those details as unknown. Build the test from the commands and session shape that actually failed in your environment.

Who this is for

This guide is for developers using Claude Code for long reviews, migrations, or repeated repository inspection—especially when a 2.1.269 session worked normally at first, then began pausing on Git reads already permitted by policy.

This is a narrow permission-regression recovery, not a reason to weaken your trust boundary. If your workspace may have exposed credentials or inherited unsafe settings, complete the Claude Code credential and trust-boundary checklist first.

What changed and why now

The official stable 2.1.270 release was published on September 12, 2026. Its single change fixes read-only Git commands in Bash unexpectedly requesting permission after a session had run for a while, and identifies the behavior as a 2.1.269 regression.

For this guide, the verified package is @anthropic-ai/claude-code@2.1.270, and the release tag resolves to commit 2b40e76d3f03b9070e2431e0bd05b4f3ace77982. Pinning both matters: a moving latest label makes it difficult to distinguish a recovered policy path from another CLI update.

The practical risk is a long workflow suddenly waiting for a human. A hurried operator may then approve a broad Bash rule, hiding the regression by expanding authority.

A six-step recovery workflow

1. Preserve the failed-session evidence

Before upgrading, record the version, repository commit, session duration, first unexpected prompt, permission mode, relevant settings, and whether the session was resumed or compacted. Sanitize logs, but keep the prompt wording and command identity.

Do not edit permission rules to make the symptom disappear. The old evidence is your baseline.

2. Pin and verify 2.1.270

Install through your normal controlled path, then verify the resolved executable and version:

npx -y @anthropic-ai/claude-code@2.1.270 --version
npm view @anthropic-ai/claude-code@2.1.270 version dist.integrity --json

Record the registry integrity. If you use a global install, wrapper, IDE, or container, confirm that the process under test actually resolves to 2.1.270.

3. Inventory effective permission sources

List the organization policy, managed, user, and project settings, command-line mode, and session-local approvals affecting Bash. Record precedence without copying secrets.

Inspect Git aliases, pagers, external diff or text-conversion helpers, and repository configuration. A read-only command can still invoke local programs through configuration; the release note does not declare every such command safe.

4. Reproduce the long-session boundary

Use a disposable clone. Start with a short baseline, then keep the same session alive through the approximate duration and workflow shape that previously failed. At controlled checkpoints, run a small inspection set:

git status --short
git rev-parse --show-toplevel
git log -1 --oneline
git diff --stat

These are proposed canaries, not Anthropic's affected-command list. Remove any canary that invokes an untrusted helper. Pass only if permitted commands produce correct output without a new prompt or repository change.

5. Keep mutation fail-closed

Under the same policy, attempt one harmless but clearly mutating operation on a disposable branch, such as creating a commit or changing a remote. Do not approve it. Expect denial or an explicit prompt, never silent execution.

Also test an unknown shell command and a read-looking Git alias that expands to an executable. This checks that Bash did not become a blanket allowlist.

6. Restore autonomy gradually

Promote first to one repository and one long-running task class. Expand only after the canary survives the relevant duration and a real task finishes with unchanged permission boundaries.

If the canary still fails, keep manual approval enabled and capture a minimal sanitized reproduction. Do not assume an older version is automatically safer: choose a separately validated fallback that satisfies your security and compatibility requirements.

Acceptance matrix

Test	Expected evidence	Hold condition
Exact runtime	2.1.270 binary path, package integrity, tag commit	Wrapper or IDE resolves another version
Short read-only baseline	Correct output, no prompt, unchanged worktree	Unexpected prompt or side effect
Long-session replay	Same policy and canaries pass after relevant duration	Prompt returns as session ages
Mutating Git negative test	Denied or explicit approval required	Silent mutation
Alias and helper boundary	External executable remains governed	Read-looking alias bypasses policy
Real-task canary	Terminal result with command and permission log	Waiting state or unexplained broad approval

Recovery record template

date / owner / repository / test commit:
previous version / resolved binary:
2.1.270 package integrity / release commit:
permission mode / effective setting sources:
failed session age / resume or compaction state:
read-only canaries / checkpoints / prompt count:
worktree before hash / after hash:
mutating negative test / result:
alias, pager, external diff, textconv review:
real task / terminal state / evidence path:
fallback / stop condition:
decision: hold | one-repo canary | expand

Common mistakes

• Granting a broad Bash allowance and calling the regression fixed.
• Testing only a fresh session when the reported failure appeared after time.
• Assuming every git command that sounds read-only cannot invoke configured helpers.
• Upgrading one binary while an IDE, wrapper, or container still runs 2.1.269.
• Checking that reads succeed without proving mutations still require approval.
• Treating a queued or waiting agent as a completed long-session canary.

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FAQ

Which Git commands were affected?

Anthropic describes the affected class as read-only Git commands run in Bash, but the release note does not publish an exhaustive command list. Test the exact commands that failed for you and label any additional canaries as your own acceptance coverage.

Does 2.1.270 remove Git permission checks?

No such broad change is stated. The fix targets unexpected prompts for read-only Git commands after a session had been running. Mutating and otherwise unapproved operations should remain governed by your effective permission policy.

Why test aliases and external helpers?

Git configuration can cause apparently simple commands to invoke other programs. Permission classification and operational safety are related but different questions; the canary should verify both.

Can I restore unattended automation immediately after upgrading?

Use a staged rollout. First prove the exact binary and policy, replay the long-session condition, pass negative mutation tests, and complete one bounded real task with terminal evidence.

Sources

• Claude Code v2.1.270 official release
• Claude Code 2.1.270 tagged changelog
• Official Claude Code 2.1.270 npm package
• Claude Code permissions documentation

Originally published on IndieSeek.