We found a bug at work where a css style changed, but it wasn't immediately obvious where it had been introduced. To fix this bug, I went back through the git history and checked out one in the recent past to see if the bug had been introduced there. This only took a few tries, and then I worked back toward the present to find when the styling had been modified.
I found the offending commit by checking out the sass file of that particular commit:
git checkout {commit_number} path/to/stylesheet.sass
Now I've got the most recent code plus the file that fixes the problem. To see what had been changed, I did a diff on the two files: the older one without the bug and the next one with the bug:
git diff {older_commit} {newer_commit} path/to/stylesheet.sass
There are a lot of changes, so I looked for anything that would be obvious (margins in this case). After that, it was modifying the styling to fix the bug and done.
Git plays nice.
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