[modalduality]

Wow, how did you find that commit?

[keeperofdakeys]

Both git and this git web view allow you to view all the commits that have modified just that file. Eg. https://sourceware.org/git/?p=glibc.git;a=history;f=resolv/r.... So it's a simple matter of looking at the diffs between commits.

Of course that's assuming you know the right file, which is often the harder problem.