Deleting branches in Git - Practice Problems & Coding Challenges

Challenge - 5 Problems

💻 Command Output

intermediate

Output of deleting a local branch

What is the output of the command git branch -d feature1 if the branch feature1 has been fully merged into main?

Git

git branch -d feature1

A Deleted branch feature1 (was abc1234).

B error: The branch 'feature1' is not fully merged.

C fatal: branch 'feature1' not found.

D warning: branch 'feature1' is currently checked out.

💡 Hint

Deleting a branch that is fully merged succeeds with a confirmation message.

The -d option deletes a local branch only if it is fully merged. The output confirms deletion with the branch name and commit hash.

💻 Command Output

intermediate

Error when deleting unmerged local branch

What error message appears when running git branch -d feature2 if feature2 has unmerged changes?

Git

git branch -d feature2

A Deleted branch feature2 (was def5678).

B error: The branch 'feature2' is not fully merged.

C fatal: branch 'feature2' not found.

D warning: branch 'feature2' is currently checked out.

💡 Hint

The -d option refuses to delete branches with unmerged changes.

Git prevents deleting branches with unmerged changes using -d to avoid data loss. It shows an error message.

💻 Command Output

advanced

Deleting a remote branch output

What is the output of the command git push origin --delete feature3 when the remote branch feature3 exists and is deleted successfully?

Git

git push origin --delete feature3

A fatal: unable to delete branch feature3

B error: remote ref does not exist

C

To origin
 - [deleted]         feature3

D warning: branch 'feature3' is currently checked out.

💡 Hint

Successful remote deletion shows the branch name with [deleted].

The output confirms deletion on the remote with the branch name and [deleted] marker.

❓ Troubleshoot

advanced

Troubleshooting remote branch deletion failure

You run git push origin --delete feature4 but get the error error: unable to delete 'feature4': remote ref does not exist. What is the most likely cause?

A The branch 'feature4' does not exist on the remote repository.

B You do not have permission to delete branches on the remote.

C The local branch 'feature4' is currently checked out.

D The remote repository is unreachable due to network issues.

💡 Hint

The error says the remote ref does not exist.

This error means the branch name is not found on the remote. It may have been deleted already or never pushed.

✅ Best Practice

expert

Best practice for safely deleting branches

Which option describes the safest practice to delete a local branch that might have unmerged work?

A Use <code>git branch -D branch_name</code> to force delete without checking merge status.

B Delete the branch directly on the remote without checking local branches.

C Rename the branch instead of deleting to keep history.

D Use <code>git branch -d branch_name</code> and verify merge status before deleting.

💡 Hint

Safe deletion avoids losing unmerged work.

Using -d checks if the branch is merged and prevents accidental data loss. Force deleting with -D can lose work.

Practice

1. What does the command git branch -d feature do?

easy

A. Deletes the remote branch named 'feature'.

B. Deletes the local branch named 'feature' only if it is fully merged.

C. Force deletes the local branch named 'feature' regardless of merge status.

D. Creates a new branch named 'feature'.

Solution

1. Step 1: Understand the command syntax

   The command git branch -d is used to delete a local branch safely.

2. Step 2: Check the merge condition

   The -d option deletes the branch only if it has been fully merged to avoid losing work.

3. Final Answer:

   Deletes the local branch named 'feature' only if it is fully merged. -> Option B

4. Quick Check:

   git branch -d safely deletes merged branches [OK]

Hint: Use -d to delete merged branches safely [OK]

Common Mistakes:

• Confusing -d with -D which force deletes
• Thinking it deletes remote branches
• Assuming it deletes unmerged branches

2. Which command correctly force deletes a local branch named bugfix?

easy

A. git branch -D bugfix

B. git branch -d bugfix

C. git push origin --delete bugfix

D. git delete branch bugfix

Solution

1. Step 1: Identify force delete option

   The -D option in git branch force deletes a local branch even if unmerged.

2. Step 2: Confirm command correctness

   git branch -D bugfix is the correct syntax to force delete the local branch named 'bugfix'.

3. Final Answer:

   git branch -D bugfix -> Option A

4. Quick Check:

   Force delete local branch = git branch -D [OK]

Hint: Use -D to force delete local branches [OK]

Common Mistakes:

• Using -d which only deletes merged branches
• Trying to delete remote branch with local command
• Typing invalid commands like git delete branch

3. What is the output of the command git push origin --delete release if the remote branch release exists?

medium

A. Deletes the remote branch 'release' and shows confirmation.

B. Deletes the local branch 'release' only.

C. Shows an error because the syntax is incorrect.

D. Creates a new remote branch named 'release'.

Solution

1. Step 1: Understand the command purpose

   git push origin --delete release is used to remove a branch from the remote repository named 'origin'.

2. Step 2: Confirm the effect on remote branch

   If the remote branch 'release' exists, this command deletes it and shows a confirmation message.

3. Final Answer:

   Deletes the remote branch 'release' and shows confirmation. -> Option A

4. Quick Check:

   Remote branch deletion uses git push origin --delete [OK]

Hint: Use git push origin --delete to remove remote branches [OK]

Common Mistakes:

• Thinking it deletes local branches
• Using wrong syntax causing errors
• Assuming it creates branches

4. You run git branch -d feature but get an error saying the branch is not fully merged. What should you do to delete it anyway?

medium

A. Rename the branch before deleting.

B. Use git push origin --delete feature to delete locally.

C. Run git branch -d feature again.

D. Use git branch -D feature to force delete the branch.

Solution

1. Step 1: Understand the error cause

   The error means the branch 'feature' has changes not merged to other branches.

2. Step 2: Use force delete option

   To delete it anyway, use git branch -D feature which forces deletion regardless of merge status.

3. Final Answer:

   Use git branch -D feature to force delete the branch. -> Option D

4. Quick Check:

   Force delete unmerged branch = git branch -D [OK]

Hint: Use -D to force delete unmerged branches [OK]

Common Mistakes:

• Trying to delete remote branch with local command
• Repeating the same command without force
• Renaming branch does not delete it

5. You want to delete a branch named hotfix both locally and remotely. Which sequence of commands is correct?

hard

A. git branch -d hotfix && git push origin --delete hotfix

B. git push origin --delete hotfix && git branch -d hotfix

C. git branch -D hotfix && git push origin --delete hotfix

D. git branch -d hotfix && git branch -D hotfix

Solution

1. Step 1: Delete local branch forcefully

   Use git branch -D hotfix to delete the local branch even if unmerged.

2. Step 2: Delete remote branch

   Use git push origin --delete hotfix to remove the branch from the remote repository.

3. Final Answer:

   git branch -D hotfix && git push origin --delete hotfix -> Option C

4. Quick Check:

   Force delete local then delete remote = git branch -D hotfix && git push origin --delete hotfix [OK]

Hint: Force delete local then delete remote branch [OK]

Common Mistakes:

• Deleting remote before local can cause confusion
• Using -d instead of -D for local unmerged branches
• Trying to delete local branch twice