diff --git a/drydocker/stick/build.sh b/drydocker/stick/build.sh
index a8bab67..27eb793 100755
--- a/drydocker/stick/build.sh
+++ b/drydocker/stick/build.sh
@@ -1,15 +1,25 @@
 #!/bin/bash
 
 md51=$(md5sum ${TMPDIR}/stick.git/drydocker.sh | awk '{print $1}')
 md52=$(md5sum /usr/local/bin/drydocker | awk '{print $1}')
 
 if [ "${md51}" != "${md52}" ]; then
     cp -f ${TMPDIR}/stick.git/drydocker.sh /usr/local/bin/drydocker
     chmod 755 /usr/local/bin/drydocker
     echo "Refreshed /usr/local/bin/drydocker"
 fi
 
-git clone https://git.kolab.org/diffusion/DO/docker.git ${TMPDIR}/docker.git
+if [ ! -d "${TMPDIR}/docker.git" ]; then
+    git clone https://git.kolab.org/diffusion/DO/docker.git ${TMPDIR}/docker.git
+else
+    pushd ${TMPDIR}/docker.git
+    git remote set-url origin https://git.kolab.org/diffusion/DO/docker.git
+    git fetch origin
+    git reset --hard origin/master
+    git clean -d -f -x
+    popd
+fi
+
 pushd ${TMPDIR}/docker.git/ci
 make all ; exit $?
 popd