Editora 0.20.0. Archived, so links from that release keep working. Read the 0.24.0 page →
Git: Unset Upstream
git.unsetUpstream Stop the current branch from tracking a remote branch.
How to run it
Open the command palette (M-x in the Emacs keymap) and search for Git: Unset Upstream, then press Enter. It has no default keybinding, but you can bind one in Settings → Keymaps.