Is there any efficient way to track history of a piece of code?

Usually, a trivial change(like coding style fix) may bury a original change of the code, and thus git blame is of less help. And to address this situation, I have to do like this:

   git blame -s REF^ <file-in-question> > temp

to dig into the history recursively by hand, to find out the original change.

Here, REF is commit-id that git blame reports.

git log -L is a good alternative option, but sometimes it seems too cubersome, as I care only one line of code.

Is there any current solution or suggestion?

Thanks, Jianyu Zhan