How can I recover a lost commit in Git

Question

First  got  your branch is ahead of origin master by 3 commits  then my app has reverted to an earlier time with earlier changes    How can I get what I spent the last 11 hours doing back

User · Answer

Another way to get to the deleted commit is with the git fsck command.

git fsck --lost-found

This will output something like at the last line:

dangling commit xyz

We can check that it is the same commit using reflog as suggested in other answers. Now we can do a git merge

git merge xyz

Note:
We cannot get the commit back with fsck if we have already run a git gc command which will remove the reference to the dangling commit.

User · Answer

Before answering  let s add some background  explaining what this HEAD is  First of all what is HEAD  HEAD is simply a reference to the current commit  latest  on the current branch   There can only be a single HEAD at any given time  excluding git worktree   The content of HEAD is stored inside  git HEAD and it contains the 40 bytes SHA-1 of the current commit   detached HEAD If you are not on the latest commit - meaning that HEAD is pointing to a prior commit in history it s called detached HEAD   On the command line  it will look like this - SHA-1 instead of the branch name since the HEAD is not pointing to the tip of the current branch     A few options on how to recover from a detached HEAD   git checkout git checkout  lt commit id gt  git checkout -b  lt new branch gt   lt commit id gt  git checkout HEAD X    x is the number of commits t go back  This will checkout new branch pointing to the desired commit   This command will checkout to a given commit   At this point  you can create a branch and start to work from this point on    Checkout a given commit    Doing so will result in a  detached HEAD  which mean that the  HEAD    is not pointing to the latest so you will need to checkout branch   in order to be able to update the code  git checkout  lt commit-id gt     Create a new branch forked to the given commit git checkout -b  lt branch name gt    git reflog You can always use the reflog as well   git reflog  will display any change which updated the HEAD and checking out the desired reflog entry will set the HEAD back to this commit  Every time the HEAD is modified there will be a new entry in the reflog git reflog git checkout HEAD        This will get you back to your desired commit   git reset --hard  lt commit id gt   quot Move quot  your HEAD back to the desired commit    This will destroy any local modifications    Don t do it if you have uncommitted work you want to keep  git reset --hard 0d1d7fc32    Alternatively  if there s work to keep  git stash git reset --hard 0d1d7fc32 git stash pop   This saves the modifications  then reapplies that patch after resetting    You could get merge conflicts if you ve modified things which were   changed since the commit you reset to    Note   Since Git 2 7  you can also use the git rebase --no-autostash as well    git revert  lt sha-1 gt   quot Undo quot  the given commit or commit range   The reset command will  quot undo quot  any changes made in the given commit   A new commit with the undo patch will be committed while the original commit will remain in the history as well    Add a new commit with the undo of the original one    The  lt sha-1 gt  can be any commit s  or commit range git revert  lt sha-1 gt    This schema illustrates which command does what   As you can see there  reset  amp  amp  checkout modify the HEAD

User · Answer

Try this  This will show all commits recorded in git for a period of time git reflog  Find the commit you want with git log HEAD  3   or git log -p HEAD  3       Then check it out if it s the right one  git checkout HEAD  3   This will create a detached head for that commit  Add and commit any changes if needed git status  git add git commit -m  quot temp work quot    Now if want to restore commit back to a branch lets say master you will need to name this branch switch to master then merge to master  git branch temp git checkout master git merge temp  Here s also a link  specifically for reflog on a Git tutorial site  Atlassian Git Tutorial

User · Answer

Sadly git is so unrelable    I just lost 2 days of work    It s best to manual backup anything before doing commit  I just did  quot git commit quot  and git just destroy all my changes without saying anything  I learned my lesson - next time backup first and only then commit  Never trust git for anything

User · Answer

git reflog is your friend  Find the commit that you want to be on in that list and you can reset to it  for example git reset --hard e870e41     If you didn t commit your changes    you might be in trouble - commit early  and commit often

User · Answer

This happened to me just today  so I am writing what came out as a lifesaver for me  My answer is very similar to  Amber  s answer  First  I did a git reflog and searched for that particular commit s hash  then just copied that hash and did a git cherry-pick  lt hash gt  from that branch  This brought all the change from that lost commit to my current branch  and restored my faith on GIT  Have a nice day

[git] How can I recover a lost commit in Git?

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