Provided by: hub_2.7.0~ds1-1_amd64 

NAME
hub-sync - Fetch git objects from upstream and update branches.
SYNOPSIS
hub sync
• If the local branch is outdated, fast-forward it;
• If the local branch contains unpushed work, warn about it;
• If the branch seems merged and its upstream branch was deleted, delete it.
If a local branch doesn`t have any upstream configuration, but has a same-named branch on the remote,
treat that as its upstream branch.
SEE ALSO
hub(1), git-fetch(1)
GITHUB January 2019 HUB-SYNC(1)