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Intermediate10 min read

Git Rebase vs Merge: What's the Difference?

Choosing between rebase and merge is one of the most debated topics in Git. This guide explains the difference, shows real examples, and helps you decide which approach fits your workflow.

The Problem

You've seen both `git merge` and `git rebase` recommended in different places — sometimes for the same problem. Your team argues about which one to use. One dev rebases everything, another never does. Your commit history is a mess.

Choosing between rebase and merge affects your entire commit history — forever. It determines whether your history tells a clear story or looks like spaghetti. Understanding when to use each is essential for writing maintainable Git history.

Common mistakes developers make with this:

  • Rebasing shared/public branches (rewrites history for everyone)
  • Using merge when a clean linear history was expected
  • Force-pushing after a rebase without warning teammates
  • Choosing one religiously without understanding the trade-offs

Gitoryx: Gitoryx lets you merge branches directly from the visual commit graph — click a branch and hit Merge. The graph updates in real time so you see the new merge commit appear exactly where you expect it.

What is Rebase vs Merge: What's the Difference??

Git merge combines two branches by creating a new merge commit that has two parents. Git rebase moves your commits to a new base, rewriting history to create a linear sequence. Both integrate changes — they just tell different stories.

Step-by-Step Guide

1

Understand what git merge does

Merge combines the histories of two branches into one. It creates a merge commit with two parent commits — preserving the full context of when and where branches diverged and rejoined.

bash
# You are on feature/search, want to bring in main's latest changes
git checkout feature/search
git merge main

# Result: a new merge commit M with two parents
# * M   Merge branch 'main' into feature/search
# |\
# | * c3  Add rate limiting (from main)
# * | b2  Add search endpoint (from feature/search)
# |/
# * a1  Initial commit

Merge is safe on shared branches because it never rewrites existing commits — it only adds a new one.

2

Understand what git rebase does

Rebase takes your commits and re-applies them on top of another branch, as if you had started your work from that new point. It rewrites the commit SHAs but produces a clean, linear history.

bash
# You are on feature/search, want to bring in main's latest changes
git checkout feature/search
git rebase main

# Result: your commits are replayed on top of main
# * b2'  Add search endpoint  ← rewritten commit (new SHA)
# * c3   Add rate limiting (from main)
# * a1   Initial commit

# No merge commit — clean linear history

Never rebase a branch that has already been pushed and is used by other developers. It rewrites history and forces them to deal with diverged commits.

3

Know when to use merge

Use merge when: integrating long-lived branches (feature → main), merging pull requests, working on shared branches, or when you want to preserve the full history of how branches evolved.

Most teams use merge commits for PR integration. The merge commit acts as a clear milestone: 'feature X was integrated here.'

4

Know when to use rebase

Use rebase when: cleaning up your local commits before a PR, keeping a feature branch up to date with main (on a private branch), or when your team prefers linear history.

bash
# Keep your feature branch up to date with main (safe — private branch)
git checkout feature/my-feature
git rebase main

# If conflicts arise during rebase:
# 1. Resolve the conflict
# 2. git add <resolved-file>
# 3. git rebase --continue
# Or abort: git rebase --abort
See this workflow in Gitoryx — Gitoryx demo

See this workflow in Gitoryx. Select any branch in the commit graph and click Merge — no command to type.

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5

Use the golden rule of rebasing

The golden rule: only rebase commits that have never been pushed to a shared remote branch. Once others have your commits, rebasing rewrites history they depend on.

If you rebase a branch that teammates have already pulled, they will encounter "diverged" errors on their next `git pull` and need to force-reset — causing confusion and potential data loss.

6

Compare the commit histories

Use `git log --oneline --graph` to see the difference between a merge-based and rebase-based history for the same changes.

bash
# Merge-based history (non-linear, preserves context)
* a8f3c2d  Merge branch 'feature/search' into main
|\
| * 7b2e1f3 Add search filter
| * 4c9d0a1 Add search endpoint
|/
* 3e5f2b8 Add rate limiting

# Rebase-based history (linear, clean)
* 7b2e1f3 Add search filter
* 4c9d0a1 Add search endpoint
* 3e5f2b8 Add rate limiting

Common Mistakes to Avoid

Rebasing a pushed shared branch

The most dangerous mistake with rebase. Once you push commits and teammates pull them, rebasing rewrites those commits — causing history divergence for everyone on the branch.

Fix: Only rebase local, unpushed commits. If you must rebase a pushed branch you own alone, use `git push --force-with-lease` (safer than `--force`).

Using merge everywhere for fear of rebase

Avoiding rebase entirely leads to cluttered history full of merge commits that make `git log` unreadable.

Fix: Use rebase for keeping your local feature branch current. Use merge for integrating into shared branches via PRs.

Force pushing without checking

`git push --force` after a rebase can silently overwrite commits pushed by a teammate since your last pull.

Fix: Always use `git push --force-with-lease` instead of `--force`. It fails safely if someone else pushed in the meantime.

Gitoryx — visual Git client for macOS, Windows & Linux
GitoryxGitoryx — macOS, Windows & Linux

Merge Branches Visually in Gitoryx

  • Select any branch in the commit graph and click Merge — no command to type.
  • The merge commit appears instantly in the graph so you can confirm the result before pushing.
  • Gitoryx warns you before rebasing a branch that has a remote tracking reference — preventing the shared-branch mistake.
  • The interactive rebase panel lets you squash, reorder, and reword commits with drag-and-drop when you do choose to rebase.
  • `--force-with-lease` is used by default when Gitoryx pushes after a rebase — never accidentally overwriting teammates' work.
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Frequently Asked Questions

What is the difference between git merge and git rebase?

Git merge creates a new merge commit that joins two branch histories, preserving the full context of both. Git rebase moves your commits on top of another branch, producing a linear history by rewriting commit SHAs.

When should I use git rebase instead of git merge?

Use rebase to keep a private feature branch up to date with main, or to clean up local commits before opening a pull request. Avoid rebase on any branch shared with other developers.

Is git rebase dangerous?

Rebase is safe on private/local branches. It becomes dangerous when applied to branches that others have already pulled, because it rewrites history and causes divergence for your teammates.

What does --force-with-lease do?

`git push --force-with-lease` is a safer alternative to `--force`. It only overwrites the remote if no one else has pushed since your last fetch, preventing accidental loss of teammates' commits.

Does git merge create an extra commit?

A standard merge creates a merge commit with two parents. However, Git can do a 'fast-forward' merge (no extra commit) when the target branch is a direct ancestor. Use `--no-ff` to always create a merge commit.

What is the golden rule of rebasing?

Never rebase commits that have been pushed to a shared remote branch. Only rebase commits that exist solely on your local machine or on a branch only you use.

Can I mix merge and rebase in the same project?

Yes — this is the most common approach. Teams often rebase locally to clean up feature branch history, then use a merge commit (via PR) to integrate into main.

What is a fast-forward merge?

A fast-forward merge happens when the branch being merged into hasn't diverged from the feature branch. Git simply moves the pointer forward without creating a merge commit. Use `git merge --ff-only` to enforce this.

Related Tutorials

Interactive Rebase Guide: Clean Up Your Git History

13 min

How to Resolve Merge Conflicts in Git

12 min

Git Branching Strategy: A Complete Guide

14 min

See it in action with Gitoryx

Everything in this tutorial is faster and clearer with a visual Git client. Gitoryx is free, runs natively on macOS, Windows, and Linux, and built for developers who want to move fast without breaking things.

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