Unable to determine upstream SVN information from HEAD history

Question

Why do I get this error message?

Answer 1

got same problem, here is solution based on http://eikke.com/importing-a-git-tree-into-a-subversion-repository/ article:

$ git svn init http://server.com/svn/project/trunk/prototypes/proto1/
$ git svn fetch
  W: Ignoring error from SVN, path probably does not exist: (160013): Filesystem has no item: '/svn/!svn/bc/100/dcom/trunk/prototypes/ws' path not found
  W: Do not be alarmed at the above message git-svn is just searching aggressively for old history.
  This may take a while on large repositories
  r147367 = 37c9910f794cb9cff7ca0d5d2eb26e1f0dabbc4d (refs/remotes/git-svn)
$ svn log http://server.com/svn/project/trunk/prototypes/proto1/
  ------------------------------------------------------------------------
  r147367 | user | 2014-01-16 18:02:43 +0100 (Thu, 16 Jan 2014) | 1 line
  proto1 home
  ------------------------------------------------------------------------
$ git log --pretty=oneline master | tail -n1
  71ceab2f4776089ddbc882b8636aacec1ba5e832 Creating template
  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ #1

$ git show-ref git-svn
  37c9910f794cb9cff7ca0d5d2eb26e1f0dabbc4d refs/remotes/git-svn
  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ #2

$ echo "71ceab2f4776089ddbc882b8636aacec1ba5e832 37c9910f794cb9cff7ca0d5d2eb26e1f0dabbc4d" >> .git/info/grafts

$ git svn dcommit
  Committing to http://server.com/svn/project/trunk/prototypes/proto1 ...
    A   README.md
    A   pom.xml
A   src/main/java/.gitkeep
A   src/main/resources/.gitkeep
A   src/main/webapp/WEB-INF/web.xml
A   src/main/webapp/index.html
A   webapps/.gitkeep
  Committed r147419
    A   README.md
    A   pom.xml
A   src/main/java/.gitkeep
A   src/main/resources/.gitkeep
A   src/main/webapp/WEB-INF/web.xml
A   src/main/webapp/index.html
A   webapps/.gitkeep
  r147419 = 6a8bda7262739306d0a6e17eaad2802737dedc35 (refs/remotes/git-svn)
  No changes between current HEAD and refs/remotes/git-svn
  Resetting to the latest refs/remotes/git-svn
  Unstaged changes after reset:
    M   pom.xml
    M   src/main/webapp/index.html
    A   .gitignore
  Committed r147420
    M   pom.xml
    M   src/main/webapp/index.html
    A   .gitignore
  r147420 = 749b5acec55c341672bca08d07de8c336b5a4701 (refs/remotes/git-svn)
  No changes between current HEAD and refs/remotes/git-svn
  Resetting to the latest refs/remotes/git-svn
  ...etc...

Answer 2

In my case, the HEAD from the svn repo should have been matched to the HEAD from the git repo. This should solve the problem:

git update-ref refs/remotes/git-svn refs/remotes/origin/master

If your use a different git branch for svn trunk, for example svntrunk, that branch should be referenced instead, that is:

git update-ref refs/remotes/git-svn refs/remotes/origin/svntrunk

Answer 3

Another cause for this problem is a wrong svn-remote.svn.rewriteRoot option (see this answer for instructions on using this).

The git-svn-id line in your commits imported from Subversion has to match the rewriteRoot URL if it is set.

Answer 4

I got this message because I used a FQDN for the git svn init command but the pre-existing git-svn integration was using just the hostname.

E.g. grep git-svn-id showed:

git-svn-id: svn://host/repo/...

But I did:

git svn init -Ttrunk svn://host.domain.com/repo

(We have a machine that regularly syncs a git repo with svn, then everyone else has git config --add remote.origin.fetch refs/remotes/*:refs/remotes/* to fetch down the svn synced branches.)

Answer 5

I saw this after I used BFG Repo-Cleaner https://rtyley.github.io/bfg-repo-cleaner/ and rewrited git history (intentional), and then tried to git svn fetch again. The message shows that the git <-> svn matching is lost.

To solves this, read https://git-scm.com/docs/git-svn
At the very bottom shows:

$GIT_DIR/svn/*/.rev_map.

Mapping between Subversion revision numbers and Git commit names. In a repository where the noMetadata option is not set, this can be rebuilt from the git-svn-id: lines that are at the end of every commit (see the svn.noMetadata section above for details).

You need to have the git-svn-id comments in the commit comments to do this. If you do, you can delete the .rev_map.* file and rebuild it.

rm .git/svn/refs/remotes/git-svn/.rev_map.*
git svn info

This should show:

Rebuilding .git/svn/refs/remotes/git-svn/.rev_map.{snip} ...
...
Done rebuilding .git/svn/refs/remotes/git-svn/.rev_map.{snip}
Path: .
...and then regular git svn info output