fix.sh in checkoff-0.153.0 vs fix.sh in checkoff-0.154.0

@@ -254,12 +254,15 @@
   if [ "$(uname)" == "Darwin" ]
   then
     HOMEBREW_NO_AUTO_UPDATE=1 HOMEBREW_NO_INSTALL_UPGRADE=1 brew install "${homebrew_package}"
   elif type apt-get >/dev/null 2>&1
   then
-    update_apt
-    sudo DEBIAN_FRONTEND=noninteractive apt-get install -y "${apt_package}"
+    if ! time dpkg -s "${apt_package}" >/dev/null
+    then
+      update_apt
+      sudo DEBIAN_FRONTEND=noninteractive apt-get install -y "${apt_package}"
+    fi
   else
     >&2 echo "Teach me how to install packages on this plaform"
     exit 1
   fi
 }
@@ -361,9 +364,10 @@
   # don't run if we're in the middle of a cookiecutter child project
   # test, or otherwise don't have a Git repo to install hooks into...
   if [ -d .git ]
   then
     bundle exec overcommit --install
+    bundle exec overcommit --sign pre-commit
   else
     >&2 echo 'Not in a git repo; not installing git hooks'
   fi
 }