I played with bzr (Bazaar) as a source-control manager (SCM) for a while, after having used svn for a couple of years. In the end, bzr turned out to be the stepping stone I needed to move to git. Hence, I started converting my repositories from bzr to git. Here’s how it’s easily done.
For this method, you’ll need to install the package bzr-fastimport to export data from your bzr repository. Gentoo users emerge dev-vcs/bzr-fastimport. Before you start, make sure you committed all your changes, e.g. using bzr st and bzr diff.
Then:
cp -pr repo-dir repo-dir_backup # Make a backup cd repo-dir # Change into your dir git init # Initialise a new git repo bzr fast-export --plain . | git fast-import # Do the actual conversion git co -f master # Will reply 'Already on master' rm -rf .bzr/ # Remove the bzr data
Verify that everything is there (e.g. using diff -r repo-dir repo-dir_backup) before you delete the backup directory. You’re all set.
AstroFloyd's blog 
Thanks so much, this was a breeze! I had needed to do this last year before you wrote this, and went through three much more difficult methods, and was not looking forward to it, so this was a relief 🙂
Great Information!
Its very useful
This is a great post, but I wanted to also point you at this one
http://blog.timmattison.com/archives/2011/06/13/how-to-convert-from-bzr-to-git-on-debianubuntu/
Which documents how to import multiple branches. Basically it notes you can use the –export-marks / –import-marks and –git-branch= flags to add multiple related branches.
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Great tutorial, however, does not work with newer Distributions anymore. But it works like a charm using a Debian-Wheezy chroot, except that you have to call “git checkout” instead of “git co” as the git version there is rather old.