Not markdown or blog posts within a git repository, no; much simpler: empty commits with commit messages as the 'blog posts' themsleves.
(vaguely like a .plan file, spiritually)
👤 Minor49er Accepted Answer ✓
Why use this over other options? Web based blogging software offers more features such as the ability to hyperlink or to embed media. Or for a minimal approach, the blog could simply be a folder of text files since the files would be easy to view and edit with a variety of software while the filesystem would handle tracking the file's creation date