What's up with this message I'm getting when running the bootstrap?

lerna success - @dendronhq/plugin-core
pulling template...
fatal: refusing to merge unrelated histories
sync 0d5d532aecd8a5f2438dff1409a0678a1f9dcc04...

(doesn't stop me from doing what i wanna do right now, just.. seems like something i should care about)