Jenkins Extended E-mail won't print $GIT_BRANCH or $GIT_COMMIT

Question

In the Jenkins \"Extended E-mail Notification\" plugin, I have created a table about the Build and Git reversion numbers, getting the values through the environment variable

Answer 1

Build variables, like $PROJECT_NAME and $BUILD_NUMBER are available directly, since they are created in this build session.

For environment variables, you have to use the following syntax:
${ENV, var="GIT_COMMIT"}