How do I delete unpushed git commits?

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轮回少年
轮回少年 2020-11-28 16:45

I accidentally committed to the wrong branch. How do I delete that commit?

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  • 2020-11-28 17:22

    If you want to move that commit to another branch, get the SHA of the commit in question

    git rev-parse HEAD
    

    Then switch the current branch

    git checkout other-branch
    

    And cherry-pick the commit to other-branch

    git cherry-pick <sha-of-the-commit>
    
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  • 2020-11-28 17:23

    I wonder why the best answer that I've found is only in the comments! (by Daenyth with 86 up votes)

    git reset --hard origin
    

    This command will sync the local repository with the remote repository getting rid of every change you have made on your local. You can also do the following to fetch the exact branch that you have in the origin.

    git reset --hard origin/<branch>
    
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  • 2020-11-28 17:26

    Do a git rebase -i FAR_ENOUGH_BACK and drop the line for the commit you don't want.

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  • 2020-11-28 17:35

    Delete the most recent commit, keeping the work you've done:

    git reset --soft HEAD~1
    

    Delete the most recent commit, destroying the work you've done:

    git reset --hard HEAD~1
    
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  • 2020-11-28 17:38

    For your reference, I believe you can "hard cut" commits out of your current branch not only with git reset --hard, but also with the following command:

    git checkout -B <branch-name> <SHA>
    

    In fact, if you don't care about checking out, you can set the branch to whatever you want with:

    git branch -f <branch-name> <SHA>
    

    This would be a programmatic way to remove commits from a branch, for instance, in order to copy new commits to it (using rebase).

    Suppose you have a branch that is disconnected from master because you have taken sources from some other location and dumped it into the branch.

    You now have a branch in which you have applied changes, let's call it "topic".

    You will now create a duplicate of your topic branch and then rebase it onto the source code dump that is sitting in branch "dump":

    git branch topic_duplicate topic
    git rebase --onto dump master topic_duplicate
    

    Now your changes are reapplied in branch topic_duplicate based on the starting point of "dump" but only the commits that have happened since "master". So your changes since master are now reapplied on top of "dump" but the result ends up in "topic_duplicate".

    You could then replace "dump" with "topic_duplicate" by doing:

    git branch -f dump topic_duplicate
    git branch -D topic_duplicate
    

    Or with

    git branch -M topic_duplicate dump
    

    Or just by discarding the dump

    git branch -D dump
    

    Perhaps you could also just cherry-pick after clearing the current "topic_duplicate".

    What I am trying to say is that if you want to update the current "duplicate" branch based off of a different ancestor you must first delete the previously "cherrypicked" commits by doing a git reset --hard <last-commit-to-retain> or git branch -f topic_duplicate <last-commit-to-retain> and then copying the other commits over (from the main topic branch) by either rebasing or cherry-picking.

    Rebasing only works on a branch that already has the commits, so you need to duplicate your topic branch each time you want to do that.

    Cherrypicking is much easier:

    git cherry-pick master..topic
    

    So the entire sequence will come down to:

    git reset --hard <latest-commit-to-keep>
    git cherry-pick master..topic
    

    When your topic-duplicate branch has been checked out. That would remove previously-cherry-picked commits from the current duplicate, and just re-apply all of the changes happening in "topic" on top of your current "dump" (different ancestor). It seems a reasonably convenient way to base your development on the "real" upstream master while using a different "downstream" master to check whether your local changes also still apply to that. Alternatively you could just generate a diff and then apply it outside of any Git source tree. But in this way you can keep an up-to-date modified (patched) version that is based on your distribution's version while your actual development is against the real upstream master.

    So just to demonstrate:

    • reset will make your branch point to a different commit (--hard also checks out the previous commit, --soft keeps added files in the index (that would be committed if you commit again) and the default (--mixed) will not check out the previous commit (wiping your local changes) but it will clear the index (nothing has been added for commit yet)
    • you can just force a branch to point to a different commit
    • you can do so while immediately checking out that commit as well
    • rebasing works on commits present in your current branch
    • cherry-picking means to copy over from a different branch

    Hope this helps someone. I was meaning to rewrite this, but I cannot manage now. Regards.

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  • 2020-11-28 17:39

    Following command worked for me, all the local committed changes are dropped & local is reset to the same as remote origin/master branch.

    git reset --hard origin

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