A lot of work, but totally possible as xrns is an open format 
Also, neurogami has made a proof of concept of sorts, check out this thread:
https://forum.renoise.com/t/rnsgit-wrapper-script-to-help-manage-versioning-songs-with-git/43667
A lot of work, but totally possible as xrns is an open format
Also, neurogami has made a proof of concept of sorts, check out this thread:
https://forum.renoise.com/t/rnsgit-wrapper-script-to-help-manage-versioning-songs-with-git/43667