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A Tale of Three Trees
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by Scott Chacon on Nov 09, 2011 |

Scott Chacon explains the internal mechanisms used by Git to do version control based on three trees –head, index, work–, and some of its commands, especially ‘reset’.


Scott Chacon is a Git evangelist and developer working at He is the author of the Pro Git book by Apress (, the Git Internals Peepcode PDF as well as the maintainer of the Git homepage ( and the Git Community Book. Scott has presented at, OSCON, RuPy, Symfony Live, Ruby Kaigi, RailsConf, RubyConf, Scotland on Rails , and has trained on Git.

Strange Loop is a multi-disciplinary conference that aims to bring together the developers and thinkers building tomorrow's technology in fields such as emerging languages, alternative databases, concurrency, distributed systems, mobile development, and the web.

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