Your branch is behind 'origin/main' by X commits

Git’s “Your branch is behind ‘origin/main’” means your local branch has fallen behind — commits exist remotely that you don’t have locally, and you need to catch up.

What It Means

This is not an error but an informational status shown by git status. It means the remote tracking branch (origin/main) has commits that your local branch doesn’t. You’re behind by X commits. Git won’t let you push if the remote has commits you haven’t integrated — it prevents you from overwriting someone else’s work. You need to either pull, rebase, or merge to synchronize.

Why It Happens

• A teammate pushed commits while you were working on your local branch.
• You pushed from another machine and forgot to pull on this one.
• A PR was merged directly on GitHub/GitLab, updating the remote branch.
• You rebased or amended a commit you’d already pushed, creating divergence.
• Automated CI/CD pipelines pushed changes to the remote branch.

How to Fix It

Step 1: Pull the latest changes

The simplest fix — fetch and merge:

git pull origin main

This fetches the remote commits and merges them into your branch.

Step 2: Rebase to keep a linear history

If you prefer a clean, linear history:

git fetch origin
git rebase origin/main

This rewinds your commits, applies the remote changes, then replays your commits on top.

Step 3: Merge origin/main into your branch

git fetch origin
git merge origin/main

This creates a merge commit that integrates the remote changes.

Step 4: Force push only if you’re sure

If you rebased and need to update the remote:

git push --force-with-lease

This is safer than --force because it checks if your remote tracking branch has moved.

Step 5: Set up pull with rebase by default

git config --global pull.rebase true

This makes git pull rebase instead of merge, keeping your history clean.