Configure (or mimic) svn:externals to include code from Github in a svn-hosted project

Question

We use Subversion locally, and we're working on a project that uses a fork of Fluent NHibernate, which is hosted on Github.

I'd like it set up so that a single svn checkout will retrieve everything necessary to build the project, but maintain the ability to fetch HEAD updates from github.

Is there any way I can pull code from the Git repository as though it was an svn:external dependency? Can I just check the .git folder into our Subversion repository and just run git fetch when I need to, then svn commit the results?

Answer 1

http://github.com/blog/626-announcing-svn-support says

$ svn checkout https://github.com/USER/PROJECT/trunk

works. So use that URL for your svn:externals.

Answer 2

• Specific commit: You need to find the appropriate revision number from the git repository using the SHA1 hash:

  $ git svn find-rev <sha1>
  

  Next, use the peg revision syntax for the revision number in your svn:externals definition.

  https://github.com/<user>/<project>@<revision>
  

• Specific tag (from @orip's comment):

  https://github.com/<user>/<project>/tags/<tag>
  

• Specific branch (from @orip's comment):

  https://github.com/<user>/<project>/branches/<branch>