Is there a best practice for this? I was thinking either to
Create a repo, add original repo as upstream remote
Create a "mirror" repo, then fork that
Create a "mirror" repo, then create a "topic branch"
Something else
related:
help.github.com/send-pull-requests
This is what I ended up doing:
Create new repo on GitHub
Clone the new repo
git clone git@github.com:svnpenn/spoon-knife.git
Add source code from original repo
cd Spoon-Knife
git remote add upstream git://spoon.com/knife.git
git fetch upstream
git merge upstream/master
Push original source code to new repo
git push origin master
At this point you can start committing your own source code!
source: help.github.com/fork-a-repo
GitHub allows you to import an existing repository on Git, Subversion, Mercurial, and TFS.
See https://github.com/new/import