    <hudson.tasks.Shell>
      <command>#!/bin/bash -xe

if [ -z &quot;$GERRIT_NEWREV&quot; ] &amp;&amp; [ -z &quot;$GERRIT_REFSPEC&quot; ]
then
    echo &quot;This job may only be triggered by Gerrit.&quot;
    exit 1
fi

if [[ ! -e .git ]]
then
    git clone https://review.<%= site %>.org/p/$GERRIT_PROJECT .
fi
git remote update || git remote update # attempt to work around bug #925790
git reset --hard
git clean -x -f -d -q

if [ ! -z &quot;$GERRIT_REFSPEC&quot; ]
then
    git checkout $GERRIT_BRANCH
    git reset --hard remotes/origin/$GERRIT_BRANCH
    git clean -x -f -d -q
    git fetch https://review.<%= site %>.org/p/$GERRIT_PROJECT $GERRIT_REFSPEC
    git merge FETCH_HEAD
else
    git checkout $GERRIT_NEWREV
    git reset --hard $GERRIT_NEWREV
    git clean -x -f -d -q
fi
</command>
    </hudson.tasks.Shell>