[git] How to fix committing to the wrong Git branch?

I just made a perfectly good commit to the wrong branch. How do I undo the last commit in my master branch and then take those same changes and get them into my upgrade branch?

If you already pushed your changes, you will need to force your next push after resetting the HEAD.

git reset --hard HEAD^
git merge COMMIT_SHA1
git push --force

Warning: a hard reset will undo any uncommitted modifications in your working copy, while a force push will completely overwrite the state of the remote branch with the current state of the local branch.

Just in case, on Windows (using the Windows command line, not Bash) it's actually four ^^^^ instead of one, so it's

git reset --hard HEAD^^^^

4 years late on the topic, but this might be helpful to someone.

If you forgot to create a new branch before committing and committed all on master, no matter how many commits you did, the following approach is easier:

git stash                       # skip if all changes are committed
git branch my_feature
git reset --hard origin/master
git checkout my_feature
git stash pop                   # skip if all changes were committed

Now you have your master branch equals to origin/master and all new commits are on my_feature. Note that my_feature is a local branch, not a remote one.

For me, this was solved by reverting the commit I had pushed, then cherry-picking that commit to the other branch.

git checkout branch_that_had_the_commit_originally
git revert COMMIT-HASH
git checkout branch_that_was_supposed_to_have_the_commit
git cherry pick COMMIT-HASH

You can use git log to find the correct hash, and you can push these changes whenever you like!

I recently did the same thing, where I accidentally committed a change to master, when I should have committed to other-branch. But I didn't push anything.

If you just committed to the wrong branch, and have not changed anything since, and have not pushed to the repo, then you can do the following:

// rewind master to point to the commit just before your most recent commit.
// this takes all changes in your most recent commit, and turns them into unstaged changes. 
git reset HEAD~1 

// temporarily save your unstaged changes as a commit that's not attached to any branch using git stash
// all temporary commits created with git stash are put into a stack of temporary commits.
git stash

// create other-branch (if the other branch doesn't already exist)
git branch other-branch

// checkout the other branch you should have committed to.
git checkout other-branch

// take the temporary commit you created, and apply all of those changes to the new branch. 
//This also deletes the temporary commit from the stack of temp commits.
git stash pop

// add the changes you want with git add...

// re-commit your changes onto other-branch
git commit -m "some message..."

NOTE: in the above example, I was rewinding 1 commit with git reset HEAD~1. But if you wanted to rewind n commits, then you can do git reset HEAD~n.

Also, if you ended up committing to the wrong branch, and also ended up write some more code before realizing that you committed to the wrong branch, then you could use git stash to save your in-progress work:

// save the not-ready-to-commit work you're in the middle of
git stash 

// rewind n commits
git reset HEAD~n 

// stash the committed changes as a single temp commit onto the stack. 
git stash 

// create other-branch (if it doesn't already exist)
git branch other-branch

// checkout the other branch you should have committed to.
git checkout other-branch

// apply all the committed changes to the new branch
git stash pop

// add the changes you want with git add...

// re-commit your changes onto the new branch as a single commit.
git commit -m "some message..."

// pop the changes you were in the middle of and continue coding
git stash pop

NOTE: I used this website as a reference https://www.clearvision-cm.com/blog/what-to-do-when-you-commit-to-the-wrong-git-branch/

If you have a clean (un-modified) working copy

To rollback one commit (make sure you note the commit's hash for the next step):

git reset --hard HEAD^

To pull that commit into a different branch:

git checkout other-branch
git cherry-pick COMMIT-HASH

If you have modified or untracked changes

Also note that git reset --hard will kill any untracked and modified changes you might have, so if you have those you might prefer:

git reset HEAD^
git checkout .

If the branch you wanted to apply your changes to already exists (branch develop, for example), follow the instructions that were provided by fotanus below, then:

git checkout develop
git rebase develop my_feature # applies changes to correct branch
git checkout develop # 'cuz rebasing will leave you on my_feature
git merge develop my_feature # will be a fast-forward
git branch -d my_feature

And obviously you could use tempbranch or any other branch name instead of my_feature if you wanted.

Also, if applicable, delay the stash pop (apply) until after you've merged at your target branch.

If you run into this issue and you have Visual Studio, you can do the following:

Right-click on your branch and select View History:

Right-click on commit you want to go back to. And Revert or Reset as needed.

For multiple commits on the wrong branch

If, for you, it is just about 1 commit, then there are plenty of other easier resetting solutions available. For me, I had about 10 commits that I'd accidentally created on master branch instead of, let's call it target, and I did not want to lose the commit history.

What you could do, and what saved me was using this answer as a reference, using a 4 step process, which is -

1. Create a new temporary branch temp from master
2. Merge temp into the branch originally intended for commits, i.e. target
3. Undo commits on master
4. Delete the temporary branch temp.

Here are the above steps in details -

1. Create a new branch from the master (where I had accidentally committed a lot of changes)

   git checkout -b temp
   

   Note: -b flag is used to create a new branch
   Just to verify if we got this right, I'd do a quick git branch to make sure we are on the temp branch and a git log to check if we got the commits right.

2. Merge the temporary branch into the branch originally intended for the commits, i.e. target.
   First, switch to the original branch i.e. target (You might need to git fetch if you haven't)

   git checkout target
   

   Note: Not using -b flag
   Now, let's merge the temporary branch into the branch we have currently checkout out target

   git merge temp
   

   You might have to take care of some conflicts here, if there are. You can push (I would) or move on to the next steps, after successfully merging.

3. Undo the accidental commits on master using this answer as reference, first switch to the master

   git checkout master
   

   then undo it all the way back to match the remote using the command below (or to particular commit, using appropriate command, if you want)

   git reset --hard origin/master
   

   Again, I'd do a git log before and after just to make sure that the intended changes took effect.

4. Erasing the evidence, that is deleting the temporary branch. For this, first you need to checkout the branch that the temp was merged into, i.e. target (If you stay on master and execute the command below, you might get a error: The branch 'temp' is not fully merged), so let's

   git checkout target
   

   and then delete the proof of this mishap

   git branch -d temp
   

There you go.

To elaborate on this answer, in case you have multiple commits to move from, e.g. develop to new_branch:

git checkout develop # You're probably there already
git reflog # Find LAST_GOOD, FIRST_NEW, LAST_NEW hashes
git checkout new_branch
git cherry-pick FIRST_NEW^..LAST_NEW # ^.. includes FIRST_NEW
git reflog # Confirm that your commits are safely home in their new branch!
git checkout develop
git reset --hard LAST_GOOD # develop is now back where it started

So if your scenario is that you've committed to master but meant to commit to another-branch (which may or not may not already exist) but you haven't pushed yet, this is pretty easy to fix.

// if your branch doesn't exist, then add the -b argument 
git checkout -b another-branch
git branch --force master origin/master

Now all your commits to master will be on another-branch.

Sourced with love from: http://haacked.com/archive/2015/06/29/git-migrate/