Editora 0.11.0. Archived, so links from that release keep working. Read the 0.16.0 page →
Git: Switch Branch…
git.switchBranch Open the branch dropdown to check out a branch.
How to run it
Open the command palette (M-x in the Emacs keymap) and search for Git: Switch Branch…, then press Enter. It has no default keybinding, but you can bind one in Settings → Keymaps.