What is the difference between `git fetch origin` and `git remote update origin`?

It makes no difference when used like this. remote update is a very high-level command - it supports grouped remotes (remotes.<group> = <list>), and updating all remotes (except those with remote.<name>.skipDefaultUpdate set), but not any of the more specific options of fetch. Under the hood, though, it does the exact same thing as fetch with the default options. The answer recommending remote upd

[delphinus35]

git fetch --all ≒ git remote update ／ うーむ。よくわからん。