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如何撤消最近犯的蠢货

I accidentally committed wrong files to Git, but I haven't pushed the commit to the server yet.

How can I undo those commits?


Undo a commit and redo

$ git commit -m "Something terribly misguided"              (1)
$ git reset HEAD~                                           (2)
<< edit files as necessary >>                               (3)
$ git add ...                                               (4)
$ git commit -c ORIG_HEAD                                   (5)
  1. This is what you want to undo
  2. This leaves your working tree (the state of your files on disk) unchanged but undoes the commit and leaves the changes you committed unstaged (so they'll appear as "Changes not staged for commit" in git status, and you'll need to add them again before committing). If you only want to add more changes to the previous commit, or change the commit message1, you could use git reset --soft HEAD~ instead, which is like git reset HEAD~ (where HEAD~ is the same as HEAD~1) but leaves your existing changes staged.
  3. Make corrections to working tree files.
  4. git add anything that you want to include in your new commit.
  5. Commit the changes, reusing the old commit message. reset copied the old head to .git/ORIG_HEAD; commit with -c ORIG_HEAD will open an editor, which initially contains the log message from the old commit and allows you to edit it. If you do not need to edit the message, you could use the -C option.

1 Note, however, that you don't need to reset to an earlier commit if you just made a mistake in your commit message. The easier option is to git reset (to upstage any changes you've made since) and then git commit --amend, which will open your default commit message editor pre-populated with the last commit message.

Beware however that if you have added any new changes to the index, using commit --amend will add them to your previous commit.

2018年02月24日46分39秒

Undoing a commit is a little scary if you don't know how it works. But it's actually amazingly easy if you do understand.

Say you have this, where C is your HEAD and (F) is the state of your files.

   (F)
A-B-C
    ↑
  master

You want to nuke commit C and never see it again. You do this:

git reset --hard HEAD~1

The result is:

 (F)
A-B
  ↑
master

Now B is the HEAD. Because you used --hard, your files are reset to their state at commit B.

Ah, but suppose commit C wasn't a disaster, but just a bit off. You want to undo the commit but keep your changes for a bit of editing before you do a better commit. Starting again from here, with C as your HEAD:

   (F)
A-B-C
    ↑
  master

You can do this, leaving off the --hard:

git reset HEAD~1

In this case the result is:

   (F)
A-B-C
  ↑
master

In both cases, HEAD is just a pointer to the latest commit. When you do a git reset HEAD~1, you tell Git to move the HEAD pointer back one commit. But (unless you use --hard) you leave your files as they were. So now git status shows the changes you had checked into C. You haven't lost a thing!

For the lightest touch, you can even undo your commit but leave your files and your index:

git reset --soft HEAD~1

This not only leaves your files alone, it even leaves your index alone. When you do git status, you'll see that the same files are in the index as before. In fact, right after this command, you could do git commit and you'd be redoing the same commit you just had.

One more thing: Suppose you destroy a commit as in the first example, but then discover you needed it after all? Tough luck, right?

Nope, there's still a way to get it back. Type git reflog and you'll see a list of (partial) commit shas that you've moved around in. Find the commit you destroyed, and do this:

git checkout -b someNewBranchName shaYouDestroyed

You've now resurrected that commit. Commits don't actually get destroyed in Git for some 90 days, so you can usually go back and rescue one you didn't mean to get rid of.

2018年02月24日46分39秒

Add/remove files to get things the way you want:

git rm classdir
git add sourcedir

Then amend the commit:

git commit --amend

The previous, erroneous commit will be edited to reflect the new index state - in other words, it'll be like you never made the mistake in the first place.

Note that you should only do this if you haven't pushed yet. If you have pushed, then you'll just have to commit a fix normally.

2018年02月24日46分39秒

This took me a while to figure out, so maybe this will help someone...

There are two ways to "undo" your last commit, depending on whether or not you have already made your commit public (pushed to your remote repository):

How to undo a local commit

Let's say I committed locally, but now want to remove that commit.

git log
    commit 101: bad commit    # latest commit, this would be called 'HEAD'
    commit 100: good commit   # second to last commit, this is the one we want

To restore everything back to the way it was prior to the last commit, we need to reset to the commit before HEAD:

git reset --soft HEAD^     # use --soft if you want to keep your changes
git reset --hard HEAD^     # use --hard if you don't care about keeping the changes you made

Now git log will show that our last commit has been removed.

How to undo a public commit

If you have already made your commits public, you will want to create a new commit which will "revert" the changes you made in your previous commit (current HEAD).

git revert HEAD

Your changes will now be reverted and ready for you to commit:

git commit -m 'restoring the file I removed by accident'
git log
    commit 102: restoring the file I removed by accident
    commit 101: removing a file we don't need
    commit 100: adding a file that we need

For more info, check out Git Basics - Undoing Things

2018年02月24日46分39秒

git rm yourfiles/*.class
git commit -a -m "deleted all class files in folder 'yourfiles'"

or

git reset --hard HEAD~1

Warning: The above command will permanently remove the modifications to the .java files (and any other files) that you wanted to commit.

The hard reset to HEAD-1 will set your working copy to the state of the commit before your wrong commit.

2018年02月24日46分39秒

To change the last commit

Replace the files in the index:

git rm --cached *.class
git add *.java

Then, if it's a private branch, amend the commit:

git commit --amend

Or, if it's a shared branch, make a new commit:

git commit -m 'Replace .class files with .java files'


(to change a previous commit, use the awesome interactive rebase)


ProTip™:   Add *.class to a gitignore to stop this happening again.


To revert a commit

Amending a commit is the ideal solution if you need to change the last commit, but a more general solution is reset.

You can reset git to any commit with:

git reset @~N

Where N is the number of commits before HEAD, and @~ resets to the previous commit.

So, instead of amending the commit, you could use:

git reset @~
git add *.java
git commit -m "Add .java files"

Check out git help reset, specifically the sections on --soft --mixed and --hard, for a better understanding of what this does.

Reflog

If you mess up, you can always use the reflog to find dropped commits:

$ git reset @~
$ git reflog
c4f708b HEAD@{0}: reset: moving to @~
2c52489 HEAD@{1}: commit: added some .class files
$ git reset 2c52489
... and you're back where you started


2018年02月24日46分39秒

Use git revert commit-id

To get the commit ID, just use git log

2018年02月24日46分39秒

If you are planning undoing a local commit entirely, whatever you changes you did on the commit, and if you don't worry anything about that, just do the following command.

git reset --hard HEAD^1

(This command will ignore your entire commit and your changes will be lost completely from your local working tree). If you want to undo your commit, but you want your changes in the staging area (before commit just like after git add) then do the following command.

git reset --soft HEAD^1

Now your committed files comes into the staging area. Suppose if you want to unstage the files, because you need to edit some wrong conent, then do the following command

git reset HEAD

Now committed files come from the staged area into the unstaged area. Now files are ready to edit, so whatever you changes, you want go edit and added it and make a fresh/new commit.

More

2018年02月24日46分39秒

If you have Git Extras installed, you can run git undo to undo the latest commit. git undo 3 will undo the last 3 commits.

2018年02月24日46分39秒

I wanted to undo the lastest 5 commits in our shared repository. I looked up the revision id that I wanted to rollback to. Then I typed in the following.

prompt> git reset --hard 5a7404742c85
HEAD is now at 5a74047 Added one more page to catalogue
prompt> git push origin master --force
Total 0 (delta 0), reused 0 (delta 0)
remote: bb/acl: neoneye is allowed. accepted payload.
To git@bitbucket.org:thecompany/prometheus.git
 + 09a6480...5a74047 master -> master (forced update)
prompt>

2018年02月24日46分39秒

I prefer to use git rebase -i for this job, because a nice list pops up where I can choose the commits to get rid of. It might not be as direct as some other answers here, but it just feels right.

Choose how many commits you want to list, then invoke like this (to enlist last three)

git rebase -i HEAD~3

Sample list

pick aa28ba7 Sanity check for RtmpSrv port
pick c26c541 RtmpSrv version option
pick 58d6909 Better URL decoding support

Then git will remove commits for any line that you remove.

2018年02月24日46分39秒

How to fix the previous local commit

Use git-gui (or similar) to perform a git commit --amend. From the GUI you can add or remove individual files from the commit. You can also modify the commit message.

How to undo the previous local commit

Just reset your branch to the previous location (for example, using gitk or git rebase). Then reapply your changes from a saved copy. After garbage collection in your local repository, it will be like the unwanted commit never happened. To do all of that in a single command, use git reset HEAD~1.

Word of warning: Careless use of git reset is a good way to get your working copy into a confusing state. I recommend that Git novices avoid this if they can.

How to undo a public commit

Perform a reverse cherry pick (git-revert) to undo the changes.

If you haven't yet pulled other changes onto your branch, you can simply do...

git revert --no-edit HEAD

Then push your updated branch to the shared repository.

2018年02月24日46分39秒

If you have committed junk but not pushed,

git reset --soft HEAD~1

HEAD~1 is a shorthand for the commit before head. Alternatively you can refer to the SHA-1 of the hash if you want to reset to. --soft option will delete the commit but it will leave all your changed files "Changes to be committed", as git status would put it.

If you want to get rid of any changes to tracked files in the working tree since the commit before head use "--hard" instead.

OR

If you already pushed and someone pulled which is usually my case, you can't use git reset. You can however do a git revert,

git revert HEAD

This will create a new commit that reverses everything introduced by the accidental commit.

2018年02月24日46分39秒

If you want to permanently undo it and you have cloned some repository

The commit id can be seen by

git log 

Then you can do -

git reset --hard <commit_id>

git push origin <branch_name> -f

2018年02月24日46分39秒

On SourceTree (GUI for GitHub), you may right-click the commit and do a 'Reverse Commit'. This should undo your changes.

On the terminal:

You may alternatively use:

git revert

Or:

git reset --soft HEAD^ # Use --soft if you want to keep your changes.
git reset --hard HEAD^ # Use --hard if you don't care about keeping your changes.

2018年02月24日46分39秒

A single command:

git reset --soft 'HEAD^' 

It works great to undo the last local commit!

2018年02月24日46分39秒

How to undo the last Git commit?

To restore everything back to the way it was prior to the last commit, we need to reset to the commit before HEAD.

  1. If you don't want to keep your changes that you made:

    git reset --hard HEAD^
    
  2. If you want to keep your changes:

    git reset --soft HEAD^
    

Now check your git log. It will show that our last commit has been removed.

2018年02月24日46分39秒

Just reset it doing the command below using git:

git reset --soft HEAD~1

Explain: what git reset does, it's basically reset to any commit you'd like to go back to, then if you combine it with --soft key, it will go back, but keep the changes in your file(s), so you get back to the stage which the file was just added, HEAD is the head of the branch and if you combine with ~1 (in this case you also use HEAD^), it will go back only one commit which what you want...

I create the steps in the image below in more details for you, including all steps that may happens in real situations and committing the code:

How to undo the last commits in Git?

2018年02月24日46分39秒

Use reflog to find a correct state

git reflog

reflog before REFLOG BEFORE RESET

Select the correct reflog (f3cb6e2 in my case) and type

git reset --hard f3cb6e2

After that the repo HEAD will be reset to that HEADid reset effect LOG AFTER RESET

Finally the reflog looks like the picture below

reflog after REFLOG FINAL

2018年02月24日46分39秒

First run:

git reflog

It will show you all the possible actions you have performed on your repository, for example, commit, merge, pull, etc.

Then do:

git reset --hard ActionIdFromRefLog

2018年02月24日46分39秒

"Reset the working tree to the last commit"

git reset --hard HEAD^ 

"Clean unknown files from the working tree"

git clean    

see - Git Quick Reference

NOTE: This command will delete your previous commit, so use with caution! git reset --hard is safer –

2018年02月24日46分39秒

Another way:

Checkout the branch you want to revert, then reset your local working copy back to the commit that you want to be the latest one on the remote server (everything after it will go bye-bye). To do this, in SourceTree I right-clicked on the and selected "Reset BRANCHNAME to this commit".

Then navigate to your repository's local directory and run this command:

git -c diff.mnemonicprefix=false -c core.quotepath=false push -v -f --tags REPOSITORY_NAME BRANCHNAME:BRANCHNAME

This will erase all commits after the current one in your local repository but only for that one branch.

2018年02月24日46分39秒

Type git log and find the last commit hash code and then enter:

git reset <the previous co>

2018年02月24日46分39秒

Undo last commit:

git reset --soft HEAD^ or git reset --soft HEAD~

This will undo the last commit.

Here --soft means reset into staging.

HEAD~ or HEAD^ means to move to commit before HEAD.


Replace last commit to new commit:

git commit --amend -m "message"

It will replace the last commit with the new commit.

2018年02月24日46分39秒

In my case I accidentally committed some files I did not want to. So I did the following and it worked:

git reset --soft HEAD^
git rm --cached [files you do not need]
git add [files you need]
git commit -c ORIG_HEAD

Verify the results with gitk or git log --stat

2018年02月24日46分39秒

There are two main scenarios

You haven't pushed the commit yet

If the problem was extra files you commited (and you don't want those on repository), you can remove them using git rm and then commiting with --amend

git rm <pathToFile>

You can also remove entire directories with -r, or even combine with other Bash commands

git rm -r <pathToDirectory>
git rm $(find -name '*.class')

After removing the files, you can commit, with --amend option

git commit --amend -C HEAD # the -C option is to use the same commit message

This will rewrite your recent local commit removing the extra files, so, these files will never be sent on push and also will be removed from your local .git repository by GC.

You already pushed the commit

You can apply the same solution of the other scenario and then doing git push with the -f option, but it is not recommended since it overwrites the remote history with a divergent change (it can mess your repository).

Instead, you have to do the commit without --amend (remember this about -amend`: That option rewrites the history on the last commit).

2018年02月24日46分39秒

Use SourceTree (graphical tool for Git) to see your commits and tree. You can manually reset it directly by right clicking it.

2018年02月24日46分39秒

Simple, run this in your command line:

git reset --soft HEAD~ 

2018年02月24日46分39秒

To reset to the previous revision, permanently deleting all uncommitted changes:

git reset --hard HEAD~1

2018年02月24日46分39秒

This article has an excellent explanation as to how to go about various scenarios (where a commit has been done as well as the push OR just a commit, before the push):

http://christoph.ruegg.name/blog/git-howto-revert-a-commit-already-pushed-to-a-remote-reposit.html

From the article, the easiest command I saw to revert a previous commit by its commit id, was:

git revert dd61ab32

2018年02月24日46分39秒