PX4 version of old pulled Firmware pull number (eg. 1.9.0)

Hey there all,

So I have a pull of the PX4 Firmware git repository (probably about a 6-9 months old) that I must find the PX4 version number for.
However, the packages.xml does not state version (constantly just sais 1.0.0), and the readme.md refers to the online .svg file which states the current version number.

How would I go about finding the version number of the pull I have done?
If it helps, I found the git commit number was 925c65b4d5276029d6565014ecc3c894ff2e4620