Execute abapGit using the report ZABAPGIT_FULL, click on New Online, fill the field Git repository URL with https://github.com/sapmentors/abap2xlsx.git, package with $abap2xls if you just want to test. If you want to transport abap2xlsx to production then use a non local package. Click Create package if the package doesn’t exist yet. Then click Clone online repo
To install abap2xlsx click pull.