Recovering from hard reset in Git - Step-by-Step Execution

Process Flow - Recovering from hard reset

Start: Hard reset done

↓

Check reflog for lost commits

↓

Identify commit hash to recover

↓

Use git reset or git checkout to restore

↓

Verify branch state restored

↓

End

After a hard reset, use git reflog to find lost commits, then reset or checkout to recover them.

Execution Sample

Git

git reflog
# find commit hash

git reset --hard <commit-hash>
# restore branch to commit

Shows how to find lost commits after a hard reset and restore the branch to a previous state.

Process Table

Step	Command	Action	Result
1	git reset --hard HEAD~2	Reset branch 2 commits back	Branch moves back, commits lost from current view
2	git reflog	Show recent HEAD changes	List of commits including lost ones with hashes
3	git reset --hard abc1234	Reset branch to lost commit abc1234	Branch restored to lost commit state
4	git status	Check current branch state	Clean working directory, branch at recovered commit

💡 Branch restored to lost commit using reflog and hard reset

Status Tracker

Variable	Start	After Step 1	After Step 3	Final
HEAD	commit xyz7890	commit uvw4567 (2 commits back)	commit abc1234 (lost commit)	commit abc1234 (restored)

Key Moments - 2 Insights

Why do lost commits still appear in git reflog after a hard reset?

Because reflog records all recent HEAD movements, including resets, so lost commits are still referenced there (see execution_table step 2).

What happens if you reset to the wrong commit hash from reflog?

You will move the branch to that commit state, which may not be the desired one. Always verify the commit message or date in reflog before resetting (see execution_table step 3).

Visual Quiz - 3 Questions

Look at the execution table, what command shows the lost commits after the hard reset?

A git reset --hard HEAD~2

B git reflog

C git status

D git checkout

💡 Hint

Check step 2 in the execution_table where lost commits are listed.

At which step is the branch restored to the lost commit?

A Step 1

B Step 2

C Step 3

D Step 4

💡 Hint

Look at the action and result columns in step 3 of execution_table.

If you skip git reflog and try to reset directly, what is likely to happen?

A You might reset to a wrong or unknown commit

B You recover the lost commits anyway

C Nothing changes, branch stays the same

D Git will automatically find the lost commits

💡 Hint

Refer to key_moments about verifying commit hashes before reset.

Concept Snapshot

Recovering from hard reset:
1. Use 'git reflog' to see recent HEAD changes including lost commits.
2. Identify the commit hash to recover.
3. Run 'git reset --hard <commit-hash>' to restore branch.
4. Verify with 'git status' that branch is restored.
Reflog keeps history even after hard reset.

Full Transcript

When you do a hard reset in git, you move your branch pointer back and lose commits from the current view. But git keeps a history of all recent changes in something called reflog. You can run 'git reflog' to see all recent commits including those lost. Find the commit hash you want to recover, then run 'git reset --hard <commit-hash>' to move your branch back to that commit. Finally, check with 'git status' to confirm your branch is restored. This way, you can recover lost work after a hard reset.

Practice

1. What is the primary command to view the history of recent commits and actions in Git after a hard reset?

easy

A. git status

B. git log --oneline

C. git reflog

D. git reset --soft

Solution

1. Step 1: Understand the purpose of git reflog

   git reflog shows a log of all recent commits and HEAD movements, including resets.

2. Step 2: Compare with other commands

   git log --oneline shows commit history but not HEAD changes; git status shows current state; git reset --soft changes HEAD but does not show history.

3. Final Answer:

   git reflog -> Option C

4. Quick Check:

   View recent HEAD changes = git reflog [OK]

Hint: Use git reflog to see all recent HEAD changes [OK]

Common Mistakes:

• Confusing git log with git reflog
• Using git status to find past commits
• Thinking git reset shows history

2. Which of the following is the correct syntax to reset your Git repository to a previous commit with a hard reset?

easy

A. git reset --hard <commit>

B. git reset -soft <commit>

C. git checkout --hard <commit>

D. git revert --hard <commit>

Solution

1. Step 1: Identify the correct reset syntax

   The correct command to reset to a previous commit and discard changes is git reset --hard <commit>.

2. Step 2: Eliminate incorrect options

   -soft is invalid flag, git checkout --hard is not a valid command, and git revert does not accept --hard.

3. Final Answer:

   git reset --hard <commit> -> Option A

4. Quick Check:

   Hard reset syntax = git reset --hard [OK]

Hint: Use git reset --hard commit_hash to restore state [OK]

Common Mistakes:

• Using -soft instead of --hard
• Confusing git revert with reset
• Trying git checkout with --hard

3. After running git reset --hard HEAD~2, which command will help you find the commit hash to recover your lost changes?

medium

A. git status

B. git branch

C. git diff

D. git reflog

Solution

1. Step 1: Understand what git reset --hard HEAD~2 does

   This command moves HEAD back two commits and discards changes, potentially losing recent commits from view.

2. Step 2: Identify command to find lost commit hashes

   git reflog shows all recent HEAD positions including those before the reset, allowing recovery.

3. Final Answer:

   git reflog -> Option D

4. Quick Check:

   Find lost commits after reset = git reflog [OK]

Hint: Use git reflog to find lost commit hashes after reset [OK]

Common Mistakes:

• Using git status which shows current state only
• Using git branch which lists branches, not commits
• Using git diff which shows changes, not history

4. You accidentally ran git reset --hard HEAD~1 and lost your latest commit. Which sequence of commands will help you recover it?

medium

A. git reflog to find commit hash, then git reset --hard <hash>

B. git log to find commit, then git revert HEAD

C. git checkout HEAD~1 then git commit --amend

D. git reset --soft HEAD~1 then git commit

Solution

1. Step 1: Use git reflog to find lost commit hash

   git reflog lists all recent HEAD positions including the lost commit before reset.

2. Step 2: Reset hard to the lost commit hash

   Use git reset --hard <hash> to restore the repository to that commit state.

3. Final Answer:

   git reflog then git reset --hard <hash> -> Option A

4. Quick Check:

   Recover lost commit = reflog + reset --hard [OK]

Hint: Find commit with reflog, restore with reset --hard [OK]

Common Mistakes:

• Using git log which may not show lost commits
• Trying git revert which creates new commits
• Using reset --soft after hard reset without commit hash

5. You performed a hard reset to a commit two steps behind but realize you need to recover the lost commits and keep your current changes. What is the best approach?

hard

A. Run git reset --hard HEAD@{1} to go back to previous HEAD state

B. Use git reflog to find lost commits, then git cherry-pick them onto current branch

C. Use git revert on the reset commit to undo the reset

D. Create a new branch from HEAD~2 and merge it back

Solution

1. Step 1: Find lost commits using git reflog

   git reflog shows the commit hashes that were lost after the hard reset.

2. Step 2: Use git cherry-pick to apply lost commits onto current branch

   This preserves current changes and reapplies lost commits without resetting the branch.

3. Final Answer:

   Use git reflog and cherry-pick lost commits -> Option B

4. Quick Check:

   Recover lost commits without losing current changes = reflog + cherry-pick [OK]

Hint: Cherry-pick lost commits found via reflog to keep current work [OK]

Common Mistakes:

• Using reset --hard to go back loses current changes
• Using revert on reset commit does not restore lost commits
• Merging from old branch may cause conflicts or duplicate commits