Pushing an existing Git repository to SVN

Question

I ve been doing all my work in Git and pushing to GitHub  I ve been very happy with both the software and the site  and I have no wish to change my working practices at this point   My PhD adviser is asking all students to keep their work in an SVN repository that s hosted at the university  I ve found tons of documentation and tutorials about to pull down an existing SVN repository into Git  but nothing about pushing a Git repository to a fresh SVN repository  I expect there must be some way to do this with a combination of git-svn and a fresh branch and rebasing and all those wonderful terms  but I m a Git newbie and don t feel confident with any of them   I then want to just run a couple of commands to push commits to that SVN repository when I choose  I wish to keep using Git and just have the SVN repository mirror what s in Git   I ll be the only person ever committing to SVN  if this makes any difference

User · Answer

there are three methods    rebase  as the other answers commit id  find svn first commit id and git first commit id   echo their into  git info grafts echo  git id svn id    gt   git info grafts then git svn dcommit checkout every git commit copy files into svn repo  svn commit   bash demo  github demo  v1 x  use rebase and commit id  v2 x  use copy files then svn commit

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I just want to share some of my experience with the accepted answer  I did all steps and all was fine before I ran the last step   git svn dcommit        git svn dcommit      Use of uninitialized value  u in substitution  s     at  usr lib perl5 vendor perl 5 22 Git SVN pm line 101       Use of uninitialized value  u in concatenation     or string at  usr lib perl5 vendor perl 5 22 Git SVN pm line 101    refs remotes origin HEAD   https   192 168 2 101 svn PROJECT NAME  not found in      I found the thread https   github com nirvdrum svn2git issues 50 and finally the solution which I applied in the following file in line 101  usr lib perl5 vendor perl 5 22 Git SVN pm  I replaced   u    s   Q url E        or die   with  if    u         u    pathname     else           u    s   Q url E        or die         refname    url  not found in   u  n       This fixed my issue

User · Answer

What if you don t want to commit every commit that you make in Git  to the SVN repository  What if you just want to selectively send commits up the pipe  Well  I have a better solution   I keep one local Git repository where all I ever do is fetch and merge from SVN  That way I can make sure I m including all the same changes as SVN  but I keep my commit history separate from the SVN entirely   Then I keep a separate SVN local working copy that is in a separate folder  That s the one I make commits back to SVN from  and I simply use the SVN command line utility for that   When I m ready to commit my local Git repository s state to SVN  I simply copy the whole mess of files over into the local SVN working copy and commit it from there using SVN rather than Git   This way I never have to do any rebasing  because rebasing is like freebasing

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I would propose a very short instruction in 4 commands using SubGit  See this post for details

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Create a new directory in the Subversion repository for your project     svn mkdir --parents svn   ip path project trunk   Change to your Git-managed project and initialize git-svn     git svn init svn   ip path project -s   git svn fetch   This will create a single commit because your SVN project directory is still empty  Now rebase everything on that commit  git svn dcommit and you should be done  It will seriously mess up your commit dates  though

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Here s how we made it work   Clone your Git repository somewhere on your machine   Open  git config and add the following  from Maintaining a read-only SVN mirror of a Git repository     svn-remote  svn       url   https   your svn repo     fetch    refs remotes git-svn   Now  from a console window  type these   git svn fetch svn git checkout -b svn git-svn git merge master   Now  if it breaks here for whatever reason  type these three lines   git checkout --theirs   git add   git commit -m  some message    And finally  you can commit to SVN   git svn dcommit   Note  I always scrap that folder afterwards

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I recently had to migrate several Git repositories to SVN  and after trying all solutions I could find  what finally worked for me was Mercurial  yes  using a third VCS   Using this guide  I came up with the following process  on Linux  but the basic idea should work on Windows as well     The necessary packages     sudo apt-get install git subversion mercurial python-subversion  Mercurial needs to be configured by adding the following to    hgrc    extensions  hgext convert   Create some temporary working directories  I had several repositories to migrate so I created directories for the SVN and Git versions  to keep them separate      mkdir svn   mkdir git  Make an empty local SVN repository     svnadmin create svn project  Clone the existing Git repository     git clone server path project git git project  Let Mercurial do its thing     hg convert --dest-type svn git project svn project  Now the SVN repository should contain the full commit history  but not with original timestamps  If this is not an issue  skip over the next part to step 11  With a little work  the date and time of each commit can be changed  Since my repositories are fairly small  it was feasible for me to do it manually  First  create a pre-revprop-change hook in the SVN repository with the following contents  to allow the necessary property to be modified      bin bash exit 0    This script has to be made executable     chmod  x svn project hooks pre-revprop-change  Mercurial created a working copy of the SVN repository  named project-wc  so switch to it and edit the commit times     cd project-wc   svn propedit svn date --revprop -r 1   Enter the correct date and time  pay attention to timezones   and save  You should get a message saying  Set new value for property svn date on revision 1   Now rinse and repeat for every other revision  Optionally check the commit history to make sure everything looks OK     svn log -r 1 HEAD   Then go back up one level     cd     Dump the repository     svnadmin dump svn project  gt  project dump  And load the dump on your Subversion server  Done    This process would probably also work directly between remote repositories  but I found it easier to work with local ones  Fixing the commit times was a lot of work  but overall the process was much more straightforward than any other method I found

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I needed to commit my existing Git repository to an empty SVN repository   This is how I managed to do this     git checkout master   git branch svn   git svn init -s --prefix svn  --username  lt user gt  https   path to repo com svn project    git checkout svn   git svn fetch   git reset --hard remotes svn trunk   git merge master   git svn dcommit   It worked without problems  I hope this helps someone   Since I had to authorize myself with a different username to the SVN repository  my origin uses private public key authentication   I had to use the --username property

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I needed this as well  and with the help of Bombe s answer   some fiddling around  I got it working  Here s the recipe   Import Git -  Subversion  1  cd  path to git localrepo 2  svn mkdir --parents protocol    path to repo PROJECT trunk -m  Importing git repo  3  git svn init protocol    path to repo PROJECT -s 4  git svn fetch 5  git rebase origin trunk 5 1   git status 5 2   git add  conflicted-files  5 3   git rebase --continue 5 4    repeat 5 1   6  git svn dcommit   After  3 you ll get a cryptic message like this      Using higher level of URL  protocol    path to repo PROJECT   gt  protocol    path to repo   Just ignore that   When you run  5  you might get conflicts  Resolve these by adding files with state  unmerged  and resuming rebase  Eventually  you ll be done  then sync back to the SVN repository  using dcommit  That s all   Keeping repositories in sync  You can now synchronise from SVN to Git  using the following commands   git svn fetch git rebase trunk   And to synchronise from Git to SVN  use   git svn dcommit   Final note  You might want to try this out on a local copy  before applying to a live repository  You can make a copy of your Git repository to a temporary place  simply use cp -r  as all data is in the repository itself  You can then set up a file-based testing repository  using   svnadmin create  home name tmp test-repo   And check a working copy out  using   svn co file    home name tmp test-repo svn-working-copy   That ll allow you to play around with things before making any lasting changes   Addendum  If you mess up git svn init  If you accidentally run git svn init with the wrong URL  and you weren t smart enough to take a backup of your work  don t ask       you can t just run the same command again  You can however undo the changes by issuing   rm -rf  git svn edit  git config   And remove the section  svn-remote  svn   section   You can then run git svn init anew

User · Answer

You can make a new SVN repository  Export your Git project  fleshing out the  git files   Add it to the SVN repository  initializing the repository with what you had so far in Git   Then use the instructions for importing SVN repositories in a fresh Git project   But this will lose your previous Git history

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Git -  SVN with complete commit history  I had a Git project and had to move it to SVN  This is how I made it  keeping the whole commit history  The only thing that gets lost is the original commit time since libSVN will set the local time when we do git svn dcommit   Howto    Have a SVN repository where we want to import our stuff to and clone it with git-svn   git svn clone https   path to svn repository repo git-svn   Go there   cd repo git-svn  Add the remote of the Git repository  in this example I m using C  Projects repo git   You want to push to SVN and give it the name old-git   git remote add old-git file    C Projects repo git   Fetch the information from the master branch from the old-git repository to the current repository   git fetch old-git master  Checkout the master branch of the old-git remote into a new branch called old in the current repository   git checkout -b old old-git master   Rebase to put the HEAD on top of old-git master  This will maintain all your commits  What this does basically is to take all of your work done in Git and put it on top of the work you are accessing from SVN   git rebase master  Now go back to your master branch   git checkout master   And you can see that you have a clean commit history  This is what you want to push to SVN  Push your work to SVN   git svn dcommit    That s all  It is very clean  no hacking  and everything works perfectly out of the box  Enjoy

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If you don t have to use any specific SVN and you are using GitHub you can use their SVN connector   More information is here  Collaborating on GitHub with Subversion

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Yet another sequence that worked  with some comments on each step     Install git-svn and subversion toolkits   sudo apt-get install git-svn subversion  Switch inside the PROJECT FOLDER  cd PROJECT FOLDER  Create the project path on the Subversion server  unfortunately the current git-svn plugin has a defect in comparison with TortoiseSVN   It is unable to store source code directly into the PROJECT FOLDER  Instead  by default  it will upload all the code into PROJECT FOLDER trunk   svn mkdir --parents protocol    path to repo PROJECT FOLDER trunk -m  creating git repo placeholder    This is the place where trunk at the end of the path is mandatory   Initialize the git-svn plugin context inside the  git folder  git svn init -s protocol    path to repo PROJECT FOLDER   This is the place where trunk at the end of the path is unnecessary Fetch an empty Subversion repository information  git svn fetch   This step is helping to synchronize the Subversion server with the git-svn plugin  This is the moment when git-svn plugin establishes remotes origin path and associates it with the trunk subfolder on the server side  Rebase old Git commits happened before the git-svn plugin became involved in the process  this step is optional   git rebase origin trunk  Add new modified files to commit  this step is regular for Git activities and is optional   git add    Commit freshly added files into the local Git repository  this step is optional and is only applicable if step 7 has been used    git commit -m  Importing Git repository   Pushing all the project changes history into the Subversion server   git svn dcommit

User · Answer

In my case  I had to initiate a clean project from SVN    Project gt  git svn init protocol   path to repo -s   Project gt  git svn fetch   add all your project sources       Project gt  git add     Project gt  git commit -m  Importing project sources    Project gt  git svn dcommit

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Using git rebase directly will lose the first commit  Git treats it different and can t rebase it  There is a procedure that will preserve full history  http   kerneltrap org mailarchive git 2008 10 26 3815034 I will transcribe the solution here  but credits are for Bj  rn  Initialize git-svn  git svn init -s --prefix svn  https   svn svn SANDBOX warren test2  The --prefix gives you remote tracking branches like  quot svn trunk quot  which is nice because you don t get ambiguous names if you call your local branch just  quot trunk quot  then  And -s is a shortcut for the standard trunk tags branches layout  Fetch the initial stuff from SVN  git svn fetch  Now look up the hash of your root commit  should show a single commit   git rev-list --parents master   grep      40      Then get the hash of the empty trunk commit  git rev-parse svn trunk  Create the graft  git replace --graft  lt root-commit-hash gt   lt svn-trunk-commit-hash gt   Now   quot gitk quot  should show svn trunk as the first commit on which your master branch is based  Make the graft permanent  git filter-branch --  svn trunk --all  Drop the graft  git replace -d  lt root-commit-hash gt   gitk should still show svn trunk in the ancestry of master  Linearize your history on top of trunk  git svn rebase  And now  quot git svn dcommit -n quot  should tell you that it is going to commit to trunk  git svn dcommit

User · Answer

If you want to keep on working with Git as your main repository and just need to  export  the revisions to SVN from time to time  you could use Tailor to keep the SVN repository in sync  It can copy revisions between different source control systems and would update the SVN with the changes you make in Git   I haven t tried a Git-to-SVN conversion  but for a SVN -  SVN example see this answer

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I would like to share a great tool being used in the WordPress community called Scatter  Git WordPress plugins and a bit of sanity scatter   This enables users to be able to send their Git repository to wordpress org SVN automatically  In theory  this code can be applied to any SVN repository

[svn] Pushing an existing Git repository to SVN

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