Rollback to an old Git commit in a public repo

Question

How can I go about rolling back to a specific commit in git   The best answer someone could give me was to use git revert X times until I reach the desired commit     So let s say I want to revert back to a commit that s 20 commits old  I d have to run it 20 times     Is there an easier way to do this     I can t use reset because this repository is public

User · Answer

Here is an example to do that      cd  yourprojects project-acme        git checkout efc11170c78

User · Answer

Step 1  fetch list of commits   git log   You ll get list like in this example    Comp Folder User  git log commit 54b11d42e12dc6e9f070a8b5095a4492216d5320 Author  author  lt author gmail com gt  Date    Fri Jul 8 23 42 22 2016  0300  This is last commit message  commit fd6cb176297acca4dbc69d15d6b7f78a2463482f Author  author  lt author gmail com gt  Date    Fri Jun 24 20 20 24 2016  0300  This is previous commit message  commit ab0de062136da650ffc27cfb57febac8efb84b8d Author  author  lt author gmail com gt  Date    Thu Jun 23 00 41 55 2016  0300  This is previous previous commit message       Step 2  copy needed commit hash and paste it for checkout   git checkout fd6cb176297acca4dbc69d15d6b7f78a2463482f   That s all

User · Answer

git read-tree -um    commit to revert to   will do it   It s  git checkout  but without updating HEAD   You can achieve the same effect with   git checkout  commit to revert to git reset --soft   1    if you prefer stringing convenience commands together   These leave you with your worktree and index in the desired state  you can just git commit to finish

User · Answer

Try this   git checkout  revision      where  revision  is the commit hash  for example  12345678901234567890123456789012345678ab     Don t forget the   at the end  very important  This will apply changes to the whole tree  You should execute this command in the git project root  If you are in any sub directory  then this command only changes the files in the current directory  Then commit and you should be good   You can undo this by  git reset --hard    that will delete all modifications from the working directory and staging area

User · Answer

The original poster states      The best answer someone could give me was to use git revert X times until I   reach the desired commit       So let s say I want to revert back to a commit that s 20 commits old  I d have   to run it 20 times       Is there an easier way to do this       I can t use reset cause this repo is public    It s not necessary to use git revert X times  git revert can accept a commit range as an argument  so you only need to use it once to revert a range of commits  For example  if you want to revert the last 20 commits   git revert --no-edit HEAD 20     The commit range HEAD 20   is short for HEAD 20  HEAD  and means  start from the 20th parent of the HEAD commit  and revert all commits after it up to HEAD     That will revert that last 20 commits  assuming that none of those are merge commits  If there are merge commits  then you cannot revert them all in one command  you ll need to revert them individually with  git revert -m 1  lt merge-commit gt    Note also that I ve tested using a range with git revert using git version 1 9 0  If you re using an older version of git  using a range with git revert may or may not work   In this case  git revert is preferred over git checkout   Note that unlike this answer that says to use git checkout  git revert will actually remove any files that were added in any of the commits that you re reverting  which makes this the correct way to revert a range of revisions   Documentation   git-revert 1  Manual Page  Commit Ranges

User · Answer

Well  I guess the question is  what do you mean by  roll back   If you can t reset because it s public and you want to keep the commit history intact  do you mean you just want your working copy to reflect a specific commit  Use git checkout and the commit hash   Edit  As was pointed out in the comments  using git checkout without specifying a branch will leave you in a  no branch  state  Use git checkout  lt commit gt  -b  lt branchname gt  to checkout into a branch  or git checkout  lt commit gt    to checkout into the current branch

User · Answer

You can find the commit id related to each commit in the commits section of GitHub BitBucket Gitlab  Its very simple  suppose your commit id is 5889575 then if you want to go back to this part in your code then you simply need to type  git checkout 5889575     This will take you to that point of time in your code

User · Answer

Let s say you work on a project and after a day or so  You notice one feature is still giving you errors  But you do not know what change you made that caused the error  So you have to fish previous working commits  To revert to a specific commit   git checkout 8a0fe5191b7dfc6a81833bfb61220d7204e6b0a9     Ok  so that commit works for you  No more error  You pinpointed the issue  Now you can go back to latest commit   git checkout 792d9294f652d753514dc2033a04d742decb82a5     And checkout a specific file before it caused the error  in my case I use example Gemfile lock    git checkout 8a0fe5191b7dfc6a81833bfb61220d7204e6b0a9 --  projects myproject Gemfile lock   And this is one way to handle errors you created in commits without realizing the errors until later

User · Answer

I m not sure what changed  but I am unable to checkout a specific commit without the option --detach  The full command that worked for me was  git checkout --detach  commit hash   To get back from the detached state I had to checkout my local branch  git checkout master

User · Answer

To rollback to a specific commit   git reset --hard commit sha   To rollback 10 commits back   git reset --hard HEAD 10   You can use  git revert  as in the following post if you don t want to rewrite the history  How to revert Git repository to a previous commit

User · Answer

Want HEAD detached mode   If you wish to rollback X time to a certain commit with a DETACHED HEAD  meaning you can t mess up anything   then by all means  use the following    replace X with how many commits you wish to go back   git checkout HEAD X   I E  to go back one commit   git checkout HEAD 1

[git] Rollback to an old Git commit in a public repo

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