The way to do this is actually also a reset, in this case, a mixed reset on a specific file: git reset -mixed filename Then, you will need to remove the file you don’t want committed. You can use the following shorthand to reset to the commit behind the HEAD, otherwise you will need to grab the reference from git reflog: git reset -soft HEAD~ In this case, a soft reset is what you want, which will send all changes back to staging. There are a few kinds of resets, but they all involve taking commits from Git’s history and sending them back to either staging, the local directory, or straight to the trash. The solution is to perform a reset, removing the commit and sending the changes back. Īnd added every change in your repo to the staged changes, and committed it, before realizing, “oh crap! I didn’t mean to commit that one file!” In this case, you would need to send all the changes back to staging, and then manually unstage the files you don’t want to push.
However, there are also cases where you might want to actually remove changes from commits. Removing a line of code, or an entire file, is also a change being added, even though it’s removing data from the project when that change is applied.
GIT CREATE BRANCH BUT DELETE HISTORY CODE
When we say “added,” we don’t just mean new lines of code changing a line of code is also adding changes. Git’s amend command only works if you’re strictly adding changes. If you don’t need to make any changes, and just want to fix a typo, you can run amend without any changes as well: git commit -amend -m "an updated commit message" Unstaging Changes From Commits When you push to a remote repo, there’s no way to know that the commit was amended, it’s a purely local change.īecause of this, you will not want to amend commits that have already been pushed, as you will run into many problems and need to forcibly push to the remote, which is not good for anybody. The old commit is still accessible from git reflog (more on that below), but going forward, the new commit is the only one that exists. Under the hood, the amend command makes a new commit with the extra changes and then completely replaces the source commit in the Git history. If you need to clarify the new changes in a new message, leave this flag out, and you’ll be prompted for the new commit message. The -no-edit flag will make the command not modify the commit message. Īnd then amend: git commit -amend -no-edit This modifies the most recent commit, and merges in the additional changes that you’ve staged.įirst, you’ll need to stage your changes: git add. If you’re simply adding changes, you can use git commit -amend.
You could of course just make a second commit, but that’s unnecessary, and also shows all your coworkers your dumb mistake when you eventually push to the remote. The most common use case for this is when you make a commit message, and then, before pushing to your remote, realize that you messed up and need to make a small change. However, sometimes it’s necessary to rewrite Git history, so Git provides a few tools for editing existing commits. Git’s commit history is designed to be immutable (for the most part) and track every change in your project so you never lose work.
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