You can use JGit (see http://www.eclipse.org/jgit/download/ ) in Maven:
<repositories>
<repository>
<id>jgit-repository</id>
<url>http://download.eclipse.org/jgit/maven</url>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>org.eclipse.jgit</groupId>
<artifactId>org.eclipse.jgit</artifactId>
<version>1.0.0.201106090707-r</version>
</dependency>
</dependencies>
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