Start vscode from github.com
It's not something new, but it's probably not known well enough: by surfing on any Github repository like f.i. https://github.com/cavo789/blog, you can just press . (the dot key) on your keyboard to start vscode online i.e. see the current repository in vscode.dev.
Here is the blog in vscode.dev: https://github.dev/cavo789/blog.
You can achieve the same result by updating the URL and modify the .com extension to .dev
But what's the point? Why would I need it
Imagine you're not at home, on your own computer, and you want to change your repo?
But also that you're on a bus/train/plane and want to correct a typeface you've just seen.
You can still want to make a very small update like changing your readme.md file. It's really faster to do online than having to clone/update the project on your computer, make the change, add/commit/push it.
Just surf on your repo using your smartphone, nothing more than using a basic web browser, change the extension to .dev and bingo, you can start to edit your repo (or the one of someone else if you want to suggest a Pull request (aka a PR)).
Read more on https://github.com/github/dev or https://docs.github.com/en/codespaces/the-githubdev-web-based-editor.