To check a single file from a specific Git commit, just specify the commit and file path in git checkout
command.
Command syntax
$ git checkout <commit> -- <file-path>
Examples
# Checkout asset/css/style.css from commit 8bc723c
$ git checkout 8bc723c -- asset/css/style.css
# Checkout asset/css/style.css from the parent commit.
$ git checkout HEAD~ -- asset/css/style.css