How to show git log history from a given commit backwards

How to show git log history from a given commit backwards

I am investigating the history of a git repository to check for changes
but do not want to bisect since I do not need to test (just see where/when
some files changed, then inspect with git show). Is there a way to tell
git to show log from a commit backwards since the beginning of time?
I could only find ways to show HEAD to commit or commit to HEAD (HEAD
being default also for the end of revision ranges).