Building LibreElec with actual nightly Kodi build ?

Hello,

Compile [LibreELEC.wiki] describes in detail how to build LibreElec from source. But how can I create a copy of LibreElec based on the actual nightly build of Kodi?

An annoying bug has been fixed and backported in the nightly build, but I don't want to wait for the release of Kodi 18.5.....

(in my case a 64-bit version for Linux)

No, in fact I do not need it to build myself, it's just that I wasn't sure what 'nightly' references to when used in conjunction with Libreelec: A 'nightly' regarding LE own features and functions or regarding the whole project 'Kodi + LE'.