The post-receive hook that I use for deploying my Wordpress theme on a `git push`.

post-receive.sh

#!/bin/sh

LOGFILE=./post-receive.log

DEPLOYDIR=$DEPLOYDIR # The place to deploy to.

echo -e "[log] Received push request at $( date +%F)" >> $LOGFILE
echo "[log] - Old SHA: $oldrev New SHA: $newrev Branch Name: $refname" >> $LOGFILE
echo "[log] Starting Deploy..." >> $LOGFILE

echo "[log] - Starting code update"
GIT_WORK_TREE="$DEPLOYDIR" git checkout -f
echo "[log] - Finished code update"

echo "[log] - Starting npm install..."
cd "$DEPLOYDIR"; npm install; cd -
echo "[log] - Finished npm install."

echo "[log] - Starting gulp build..."
cd "$DEPLOYDIR"; gulp build; cd -
echo "[log] - Finished gulp build."

echo "[log] - Building Hugo blog..."
cd "$DEPLOYDIR" && hugo
echo "[log] - Finished building hugo blog"

echo "[log] Finished Deploy" >> $LOGFILE

What does the hugo command do in your case? I really like this approach to a simple post-receive build system but I'm a bit confused what hugo is doing.