use https://github.com/jamf/JamfMigrator and set it to export only.. 

Easiest method is to use the API, and good ole Rich Trouton has a script for that. Run this from your machine since you will be storing credentials. Just edit the download directory, the URL, user, pass, and you should be good.

https://github.com/rtrouton/rtrouton_scripts/blob/main/rtrouton_scripts/Casper_Scripts/Jamf_Pro_Computer_Script_Download/Jamf_Pro_Computer_Script_Download.sh 

Thank you so much Steve.