Push Rejected After Claude Rebase — Fix (2026)

The Error

error: failed to push some refs to 'origin/feature-branch'
hint: Updates were rejected because the tip of your current branch is behind
hint: its remote counterpart. Claude Code performed a rebase which rewrote history.

This appears after Claude Code runs a git rebase and you try to push the rebased branch to the remote. The remote rejects the push because the rebase rewrote commit history.

The Fix

git push --force-with-lease
  1. Use --force-with-lease instead of --force. This safely overwrites the remote only if no one else has pushed new commits since your last fetch.
  2. If --force-with-lease fails, someone else pushed to the branch. Fetch and reconcile first.
  3. Never force push to main or master.

Why This Happens

Git rebase rewrites commit SHAs by replaying your commits on top of a new base. The rewritten commits have different hashes than the ones on the remote, so Git sees them as divergent history and rejects a normal push. Claude Code sometimes performs rebase operations when asked to “update the branch” or “sync with main,” which triggers this situation.

If That Doesn’t Work

If --force-with-lease fails because the remote has new commits:

git fetch origin
git rebase origin/feature-branch
git push --force-with-lease

If the branch is shared with teammates, use merge instead of rebase:

git rebase --abort
git merge origin/main
git push

Check what Claude Code actually did:

git reflog | head -20

Prevention

# CLAUDE.md rule
Never run git rebase on shared branches. Use git merge to incorporate upstream changes. Only rebase on personal feature branches that no one else is working on. Never use --force, always use --force-with-lease.

See Also

This fix also applies if you see these related error messages:

  • fatal: not a git repository
  • error: failed to push some refs
  • fatal: refusing to merge unrelated histories
  • error: cannot rebase: you have unstaged changes
  • CONFLICT (content): Merge conflict in file.ts

Frequently Asked Questions

Why does Claude Code require git?

Claude Code uses git for several core operations: tracking file changes, creating commits, reading blame information, searching history with git log, and managing branches. Without git, these operations fail and Claude Code falls back to less efficient alternatives.

Can Claude Code work in a non-git directory?

Yes, but with reduced functionality. File search and editing work normally, but version control operations (commit, diff, blame) are unavailable. Claude Code displays a warning when opened in a directory without git initialization.

How do I prevent Claude Code from making unwanted git operations?

Add rules to your CLAUDE.md: Do not create commits automatically. Do not run git push. Always ask before any git operation that modifies history. Claude Code respects these constraints and asks for confirmation before proceeding.

Why does Claude Code’s rebase fail?

Claude Code cannot perform interactive rebases (git rebase -i) because it requires an interactive editor. Non-interactive rebases fail when there are unstaged changes or merge conflicts. Commit or stash changes before rebasing.

Try it: Paste your error into our Error Diagnostic for an instant fix.

Git Operations in Claude Code: Safety Checklist

Claude Code can execute git commands, which makes safety guardrails important:

Before any destructive operation: Always check git status and git stash list to confirm there are no uncommitted changes that could be lost.

Branch management: Claude Code should create feature branches for non-trivial changes rather than committing directly to main. Use the pattern git checkout -b claude/feature-name to clearly identify AI-generated branches.

Commit message conventions: Configure your preferred commit format in CLAUDE.md. Claude Code follows the format you specify. Common formats: Conventional Commits (feat: add user search), Angular style, or simple descriptive messages.

Common Git Mistakes Claude Code Makes

  1. Amending the wrong commit. If a pre-commit hook fails, Claude Code sometimes uses --amend on the next attempt, which modifies the previous (successful) commit instead of creating a new one. Configure CLAUDE.md with: “Never use git commit –amend. Always create new commits.”

  2. Force pushing to shared branches. Claude Code may suggest git push --force to resolve push rejections. Add Bash(git push --force*) to your deny list in settings.json.

  3. Committing generated files. Without guidance, Claude Code may commit dist/, node_modules/, or .env files. Ensure your .gitignore is complete and add a pre-commit hook that checks for these.