@Ace
To install from source, the main way is to use ssb-npm.
Alternatively, here is a script that installs git-ssb from the package tarballs that npm/ssb-npm uses: &e6TJkl1... (previous version: %uVdBiIE...)
curl -s 'http://localhost:8989/blobs/get/&e6TJkl1uR+oJFMq0irowdoB49ZcPYbXVDsFoO/UJZzU=.sha256' | sh
Or, you can download the binary release via IPFS: %36dNnze...