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Check out the version of the codebase from which you start the release. For a new minor or major release, this may be HEAD of the master branch. To build a hotfix/incremental release, instead of the master branch, use the release branch of the release being patched. (Please make sure your cloned repository is up-to-date before starting.)

$ git checkout BRANCH="<master branch OR release tag> branch>"
$ git checkout $BRANCH

Set up a few environment variables to simplify Maven commands that follow. (We use bash Unix syntax in this guide.)

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$ git checkout -b release-$SHORT_RELEASE_VERSION 
$ git checkout master$BRANCH
$ cd tools
tools $ OLD_VERSION=$CURRENT_SNAPSHOT_VERSION NEW_VERSION=$NEXT_SNAPSHOT_VERSION releasing/update_branch_version.sh
$ cd ..
$ git checkout -b release-$SHORT_RELEASE_VERSION  

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