? Git Reflog

? Quick Overview

Git reflog is a powerful Git command that allows you to view the history of the HEAD pointer and other references. It records actions like commits, resets, merges, and rebases, making it extremely useful for recovering lost commits or returning to previous states.

? Key Concepts

Tracks changes to HEAD and branch references
Works even when commits are no longer in history
Acts as a safety net for destructive Git operations

? Syntax / Theory

Basic syntax to view reflog:

? View Code Example

// Show the history of HEAD movements
git reflog

? Understanding Reflog Output

? View Code Example

// Sample reflog entry format
1234567 HEAD@{0}: commit: Commit message

1234567 → Commit hash
HEAD@{0} → Most recent position of HEAD
commit → Action performed

♻️ Recovering Lost Commits

You can restore lost commits using the hash found in reflog.

? View Code Example

// Checkout a lost commit using its hash
git checkout 1234567

? View Code Example

// Restore commit by resetting HEAD
git reset --hard 1234567

? Undoing a Git Reset

? View Code Example

// Find the commit before reset
git reflog

? View Code Example

// Move HEAD back to previous state
git reset --hard abcdef1

? Use Cases

Recover deleted or reset commits
Undo rebase or merge mistakes
Track destructive Git operations

? Tips & Best Practices

Use reflog immediately after mistakes
Do not rely on reflog for long-term history
Clean old entries using git reflog expire

? Try It Yourself

Perform a hard reset and recover using reflog
Practice switching between HEAD states
Experiment with reflog expiration