Pushing new branches to remote in Git - Practice Problems & Coding Challenges

Challenge - 5 Problems

💻 Command Output

intermediate

What is the output of pushing a new branch to remote?

You created a new branch named feature-x locally. You run git push origin feature-x. What is the expected output?

Git

git push origin feature-x

A fatal: remote origin already exists.

B

error: src refspec feature-x does not match any.
fatal: failed to push some refs to 'github.com:user/repo.git'

C Everything up-to-date

D

Enumerating objects: 5, done.
Counting objects: 100% (5/5), done.
Delta compression using up to 8 threads
Compressing objects: 100% (3/3), done.
Writing objects: 100% (3/3), 350 bytes | 350.00 KiB/s, done.
Total 3 (delta 1), reused 0 (delta 0), pack-reused 0
remote: 
remote: Create a pull request for 'feature-x' on GitHub:
remote:   https://github.com/user/repo/pull/new/feature-x
To github.com:user/repo.git
 * [new branch]      feature-x -> feature-x

💡 Hint

Think about what happens when you push a branch that exists locally but not yet on remote.

When you push a new branch, git uploads the commits and creates the branch on the remote. The output shows the upload progress and confirms the new branch creation.

🧠 Conceptual

intermediate

Why do you need to push a new branch explicitly to remote?

You created a new branch locally but your teammate cannot see it on the remote repository. Why is pushing the new branch necessary?

A Because pushing deletes the branch from local.

B Because git automatically pushes all branches when you commit locally.

C Because branches are local by default and must be pushed to be visible on remote.

D Because remote repositories do not support branches.

💡 Hint

Think about the difference between local and remote repositories.

Branches exist locally until you push them. Only then do they appear on the remote repository for others to access.

❓ Troubleshoot

advanced

What error occurs if you try to push a branch that does not exist locally?

You run git push origin feature-y but you never created feature-y locally. What error will git show?

Git

git push origin feature-y

A

error: src refspec feature-y does not match any.
fatal: failed to push some refs to 'origin'

B Everything up-to-date

C fatal: remote origin already exists.

D fatal: could not read Username for 'https://github.com': No such device or address

💡 Hint

Check if the branch exists locally before pushing.

Git cannot push a branch that does not exist locally, so it reports the src refspec does not match any.

🔀 Workflow

advanced

What is the correct sequence to create and push a new branch to remote?

Arrange the steps in the correct order to create a new branch feature-z and push it to remote.

A 3,4,1,2

B 1,3,4,2

C 1,4,3,2

D 3,1,4,2

💡 Hint

You must create the branch first, then add and commit changes, then push.

First create and switch to the branch, then stage and commit changes, finally push the new branch to remote.

✅ Best Practice

expert

Which command safely pushes a new branch and sets upstream tracking in one step?

You want to push your new branch feature-new to remote and set it to track the remote branch automatically. Which command achieves this?

A git push -u origin feature-new

B git push origin feature-new --force

C git push origin feature-new:feature-new

D git push origin --all

💡 Hint

Look for the option that sets upstream tracking.

The -u or --set-upstream flag sets the local branch to track the remote branch after pushing.

Practice

1. What is the correct command to push a new branch named feature1 to the remote repository?

easy

A. git push origin new feature1

B. git push origin feature1

C. git push new feature1

D. git push feature1 origin

Solution

1. Step 1: Understand the git push syntax

   The correct syntax to push a branch is git push origin <branch-name>.

2. Step 2: Apply the branch name

   Replace <branch-name> with feature1, resulting in git push origin feature1.

3. Final Answer:

   git push origin feature1 -> Option B

4. Quick Check:

   Push new branch = git push origin branch-name [OK]

Hint: Use 'git push origin branch-name' to push new branches [OK]

Common Mistakes:

• Swapping origin and branch name order
• Adding extra words like 'new'
• Forgetting to specify the remote 'origin'

2. Which of the following commands correctly pushes a new branch dev to the remote named origin?

easy

A. git push origin/dev

B. git push origin:dev

C. git push dev origin

D. git push origin dev

Solution

1. Step 1: Recall the correct push syntax

   The command to push a branch is git push origin <branch-name>.

2. Step 2: Match the branch and remote

   Here, origin is the remote and dev is the branch, so git push origin dev is correct.

3. Final Answer:

   git push origin dev -> Option D

4. Quick Check:

   Push syntax = git push origin branch [OK]

Hint: Remember: remote first, then branch name [OK]

Common Mistakes:

• Using colon instead of space between remote and branch
• Swapping remote and branch order
• Using slash notation incorrectly

3. Given the commands:

git checkout -b featureX
# make some changes
git add .
git commit -m "Add featureX"
git push origin featureX

What will be the result of the last command?

medium

A. The new branch featureX is created and pushed to the remote repository.

B. An error because the branch featureX does not exist locally.

C. Nothing happens because the branch is not checked out.

D. The changes are pushed but the branch is not created remotely.

Solution

1. Step 1: Analyze branch creation and commit

   The command git checkout -b featureX creates and switches to the new branch featureX. Then changes are added and committed.

2. Step 2: Understand the push effect

   git push origin featureX pushes the new branch featureX to the remote, creating it there.

3. Final Answer:

   The new branch featureX is created and pushed to the remote repository. -> Option A

4. Quick Check:

   Push new branch after commit = branch created remotely [OK]

Hint: Push after commit creates branch remotely [OK]

Common Mistakes:

• Assuming branch must exist remotely before push
• Forgetting to commit before pushing
• Thinking push only updates existing branches

4. You run git push origin new-feature but get an error: error: src refspec new-feature does not match any. What is the most likely cause?

medium

A. You forgot to create or checkout the branch new-feature locally.

B. The remote repository origin does not exist.

C. You have uncommitted changes in your working directory.

D. You need to use git push -u origin new-feature instead.

Solution

1. Step 1: Understand the error message

   The error means Git cannot find a local branch named new-feature to push.

2. Step 2: Identify the cause

   This usually happens if the branch was never created or checked out locally before pushing.

3. Final Answer:

   You forgot to create or checkout the branch new-feature locally. -> Option A

4. Quick Check:

   Branch must exist locally before push [OK]

Hint: Create or checkout branch before pushing [OK]

Common Mistakes:

• Assuming push creates branch locally
• Ignoring error and retrying same command
• Confusing remote existence with local branch

5. You have a local branch release with new commits. You want to push it to remote origin and set it to track the remote branch. Which command should you use?

hard

A. git push origin release

B. git push origin -u release

C. git push -u origin release

D. git push --set-upstream release origin

Solution

1. Step 1: Understand tracking branches

   To set the local branch to track the remote branch, use the -u or --set-upstream option with git push.

2. Step 2: Apply correct syntax

   The correct syntax is git push -u origin release which pushes and sets upstream tracking.

3. Final Answer:

   git push -u origin release -> Option C

4. Quick Check:

   Use -u to set upstream tracking [OK]

Hint: Use 'git push -u origin branch' to set tracking [OK]

Common Mistakes:

• Placing -u after remote and branch incorrectly
• Using --set-upstream with wrong argument order
• Forgetting to set upstream and needing manual tracking