Git refusing to merge unrelated histories on rebase

Question

During git rebase origin development the following error message is shown from Git   fatal  refusing to merge unrelated histories Error redoing merge 1234deadbeef1234deadbeef   My Git version is 2 9 0  It used to work fine in the previous version    How can I continue this rebase allowing unrelated histories with the forced flag introduced in the new release

User · Answer

Error when do a git pull origin master  fatal  refusing to merge unrelated histories  Solved this command git pull origin master --allow-unrelated-histories

User · Answer

I had the same problem  Try this    git pull origin master --allow-unrelated-histories   git push origin master

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I see the most voted answer doesn t solve this question  which is in the context of rebasing  The only way to synchronize the two diverged branches is to merge them back together  resulting in an extra merge commit and two sets of commits that contain the same changes  the original ones  and the ones from your rebased branch   Needless to say  this is a very confusing situation  So  before you run git rebase  always ask yourself     Is anyone else looking at this branch     If the answer is yes  take your hands off the keyboard and start thinking about a non-destructive way to make your changes  e g   the git revert command   Otherwise  you   re safe to re-write history as much as you like  Reference  https   www atlassian com git tutorials merging-vs-rebasing the-golden-rule-of-rebasing

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I had the same problem  The problem is remote had something preventing this   I first created a local repository  I added a LICENSE and README md file to my local and committed   Then I wanted a remote repository so I created one on GitHub  Here I made a mistake of checking  Initialize this repository with a README   which created a README md in remote too   So now when I ran  git push --set-upstream origin master   I got   error  failed to push some refs to  https   github com lokeshub myTODs git  hint  Updates were rejected because the tip of your current branch is behind hint  its remote counterpart  Integrate the remote changes  e g  hint   git pull       before pushing again  hint  See the  Note about fast-forwards  in  git push --help  for details    Now to overcome this I did  git pull origin master   Which resulted in the below error   From https   github com lokeshub myTODs branch            master     - gt  FETCH HEAD fatal  refusing to merge unrelated histories     I tried   git pull origin master --allow-unrelated-histories   Result   From https   github com lokeshub myTODs    branch            master     - gt  FETCH HEAD Auto-merging README md CONFLICT  add add   Merge conflict in README md Automatic merge failed  fix conflicts and then commit the result    Solution   I removed the remote repository and created a new  I think only removing file README could have worked  and after that the below worked   git remote rm origin git remote add origin https   github com lokeshub myTODOs git git push --set-upstream origin master

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Two possibilities when this can happen -   You have cloned a project and  somehow  the  git directory got deleted or corrupted  This leads Git to be unaware of your local history and will  therefore  cause it to throw this error when you try to push to or pull from the remote repository  You have created a new repository  added a few commits to it  and now you are trying to pull from a remote repository that already has some commits of its own  Git will also throw the error in this case  since it has no idea how the two projects are related    SOLUTION  git pull origin master --allow-unrelated-histories  Ref - https   www educative io edpresso the-fatal-refusing-to-merge-unrelated-histories-git-error

User · Answer

This usually happens when you commit first time to remote repository   As error clearly says  refusing to merge unrelated histories   we need to use --allow-unrelated-histories flag    git pull origin master  --allow-unrelated-histories   Now there would be some conflicts which we have to solve manually  After that just commit the code and push it

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WARNING THIS WILL POTENTIALLY OVERWRITE THE REMOTE REPOSITORY  This worked for me   git push origin master --force

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For Android Studio and IntelliJ   First  commit everything and resolve any conflicts   Then open the terminal from below of IDE and enter   git pull origin master --allow-unrelated-histories   Now you can push

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For Googlers  If you created a new repo on GitHub and accidentally initialized it with README or  gitignore files  If you found yourself unable to merge or rebase because  git folder got corrupted  Then   Create a new folder git clone Paste all your files into this folder  Now the local and remote will have  quot related histories quot  and will merge or rebase happily

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I am using the rebase for years and I had never encountered such a problem  However  your first problem is  that you try to do it directly on the remote branch development from the remote repository  called origin  That is literally wrong because rebase is a dangerous command  that restructures the git history  Having said that  you should first try on your local repository and pushing it only  if it works for you as expected   So  my usual rebase workflow looks like following  but please keep in mind  that you should not use rebase on branches  which you are not the only one committee  For such branches  use simply merge and resolve conflicts  if applicable     make sure you have a clean working tree  no uncommit changes  checkout to the branch you want to rebase onto  for instance  let s say it s master  as a one-line command   git checkout master  amp  amp  git pull origin master  amp  amp  git checkout development Do the actual rebase  git rebase master If it s done and everything works as expected  push it to your remote  For doing so  you need to force it  because the remote host already has the history in another order  the remote would answer with nothing to push  So  we need to say  my local version of the history is correct  overwrite everything on that remote branch using my local version of the history   git push -f origin development   As I already mentioned  keep in mind  that rebase manipulates the git history  that is usually a bad thing  However  it s possible to do that on branches  where no one else commits to  In order to keep the branch pull-able for the other developers  use another merge strategy like merge itself  squash or cherrypick  So  in other words  Rebase shouldn t be your tool on distributed development  It works fine for you if you are the only one who works on this repository   We use the feature branch strategy  In this  I usually use rebase in order to get the  updates  from the other developers  that happened in the meantime on the master branch  Doing so  it reduces the size of commits that are visible in a pull request  Therefore  it makes it easier for the code reviewer to see my changes made in this feature branch

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When doing a git pull  I got this message fatal  refusing to merge unrelated histories for a repo module where I hadn t updated the local copy for a while   I ran this command just to refresh local from origin  I just wanted latest from remote and didn t need any local changes   git reset --hard origin master   This fixed it in my case

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For this  enter the command   git pull origin branchname --allow-unrelated-histories   For example    git pull origin master --allow-unrelated-histories   Reference   GitHub unrelated histories issue

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Firstly pull the remote changes to your local using the following command   git pull origin branchname --allow-unrelated-histories      branchname is master in my case   When the pull command done  conflict occurs  You should solve the conflicts  I use Android Studio to solve conflicts    When conflicts solved  merge is done   Now you can safely push

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I tried git pull --allow-unrelated-histories didn t work  but what solves this issue for me was   I copied all the files on my desktop repository to another folder and then deleted the folder   Then I clone the repo again because it is a new project   When I copied my files again and push it worked like charm

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In my case  the error was just fatal  refusing to merge unrelated histories on every try  especially the first pull request after remotely adding a Git repository   Using the --allow-unrelated-histories flag worked with a pull request in this way   git pull origin branchname --allow-unrelated-histories

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I struggled with this as well  but I managed to find a workaround   When you run into the error above  just cherry-pick the merge commit and then continue the rebase   git cherry-pick -m 1 1234deadbeef1234deadbeef git rebase --continue

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I got this error when I set up a local repository first  Then I went to GitHub and created a new repository  Then I ran  git remote add origin  lt repository url gt    When I tried to push or pull  I got the same fatal  unrelated histories error every time   Here is how I fixed it   git pull origin master --allow-unrelated-histories git merge origin origin master     add and commit here    git push origin master

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Since all the other answers are not actually answering the question  here is a solution inspired by this answer on a related question   So you get your error doing git rebase     git rebase origin development fatal  refusing to merge unrelated histories Error redoing merge 1234deadbeef1234deadbeef   This error doesn t actually cancel the rebase  but you are now in the middle of it     git status interactive rebase in progress  onto 4321beefdead Last command done  1 command done      pick 1234deadbeef1234deadbeef test merge commit   So you can now do the merge by hand  Find out the parent commits of the original merge commit     git log -1 1234deadbeef1234deadbeef commit 1234deadbeef1234deadbeef Merge  111111111 222222222 Author  Hans Dampf Date    Wed Jun 6 18 04 35 2018  0200      test merge commit   Find out which of the two merge parents is the one that was merged into the current one  probably the second one  verify with git log 222222222   and then do the merge by hand  copying the commit message of the original merge commit     git merge --allow-unrelated 222222222 --no-commit Automatic merge went well  stopped before committing as requested   git commit -C 1234deadbeef1234deadbeef  detached HEAD 909af09ec  test merge commit  Date  Wed Jun 6 18 04 35 2018  0200   git rebase --continue Successfully rebased and updated refs heads test-branch

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Try git pull --rebase development

User · Answer

Try the following command   git pull origin master --allow-unrelated-histories   This should solve your problem

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The default behavior has changed since Git 2 9       git merge  used to allow merging two branches that have no common      base by default  which led to a brand new history of an existing      project created and then get pulled by an unsuspecting maintainer       which allowed an unnecessary parallel history merged into the      existing project  The command has been taught not to allow this by      default  with an escape hatch --allow-unrelated-histories option      to be used in a rare event that merges histories of two projects      that started their lives independently    See the Git release changelog for more information   You can use --allow-unrelated-histories to force the merge to happen

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git pull origin  lt branch gt  --allow-unrelated-histories   You will be routed to a Vim edit window    Insert commit message  Then press Esc  to exit  Insert  mode   then    colon   then x  small  x   and finally hit Enter to get out of Vim git push --set-upstream origin  lt branch gt

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I ran this command and issue got resolved  git pull origin branchName --allow-unrelated-histories  Check out this page for more info

[git] Git refusing to merge unrelated histories on rebase

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