Recovering from bad rebase in Git - Mini Project: Build & Apply

Recovering from a Bad Git Rebase

📖 Scenario: You are working on a feature branch in a Git repository. You tried to rebase your branch onto the main branch, but something went wrong and your commit history looks messy. You want to safely recover your branch to the state before the rebase.

🎯 Goal: Learn how to find the commit before the rebase and reset your branch to that commit to undo the bad rebase.

📋 What You'll Learn

Use git reflog to find the commit before the rebase

Create a variable to store the commit hash before the rebase

Use git reset --hard to reset the branch to that commit

Print the current commit hash to confirm recovery

💡 Why This Matters

🌍 Real World

Developers often make mistakes during rebasing. Knowing how to recover safely prevents loss of work and keeps the project history clean.

💼 Career

Understanding Git recovery commands is essential for software developers, DevOps engineers, and anyone working with version control in teams.

1

Find the commit before the rebase

Run git reflog and find the commit hash just before the rebase started. Assign this commit hash to a variable called commit_before_rebase as a string.

Git

# Run git reflog and assign the commit hash before rebase to commit_before_rebase
# Your code here

Need a hint?

Use git reflog in your terminal to see recent commits and find the commit hash before the rebase.

2

Prepare to reset to the commit before rebase

Create a command string called reset_command that uses git reset --hard with the commit_before_rebase variable.

Git

commit_before_rebase = "abc1234"
# Create reset_command string using git reset --hard and commit_before_rebase
# Your code here

Need a hint?

Use an f-string to insert the commit hash into the reset command.

3

Reset the branch to the commit before rebase

Run the reset_command using Python's os.system() function to reset your branch to the commit before the rebase.

Git

commit_before_rebase = "abc1234"
reset_command = f"git reset --hard {commit_before_rebase}"
# Import os and run reset_command
# Your code here

Need a hint?

Import the os module and use os.system() to run the git reset command.

4

Confirm the current commit hash

Run git rev-parse HEAD using os.popen() and print the output to confirm your branch is reset to the correct commit.

Git

import os
commit_before_rebase = "abc1234"
reset_command = f"git reset --hard {commit_before_rebase}"
os.system(reset_command)
# Run git rev-parse HEAD and print the output
# Your code here

Need a hint?

Use os.popen() to run git rev-parse HEAD and print the commit hash.