From part 2 of my blog post, 'Building a Deployment Pipeline Using Git, Maven, Jenkins, and GlassFish (Part 2 of 2)'

post-receive.sh

#!/bin/sh
# Call Jenkins to start build and pass environment parameter
#
echo "executing post-receive hook"
echo "environment=testing"
echo "user=jenkins"

# cURL POST request using jenkins user with API token
curl -u jenkins:{your-api-token-here} \
    --data "delay=0sec&environment=testing" \
    "{your-jenkins-server-url:port}/job/GitMavenGlassFish_Build/buildWithParameters"