How can i get master version

hi all ,
I followed this guide to install ERPNext
but when i finished i got
ERPNext: v11.x.x-develop (bd2989a) (develop)
Frappe Framework: v11.x.x-develop (c4e8482) (develop)
but in need the Master version
would you help me to get from the master branch


You can use

bench switch-to-master

to checkout all your app repositories to master branch.