In the past, I used to get Juce from here: https://sourceforge.net/p/juce/code/ci/master/tree/
But I noticed it hasn't been updated since March, which leads me to think this is no longer a valid repo.
On GitHub, I found this one: https://github.com/julianstorer/JUCE
But before I clone, I figured I'd ask to see if there is a different repo from where you'd like us to clone. The download page only has .zip files for download, no information on source repos.
Stéphane