Editora 0.20.0. Archived, so links from that release keep working. Read the 0.24.0 page →
Git: Checkout Tag or Revision…
git.checkoutRevision Check out a tag, branch or commit by name.
How to run it
Open the command palette (M-x in the Emacs keymap) and search for Git: Checkout Tag or Revision…, then press Enter. It has no default keybinding, but you can bind one in Settings → Keymaps.