If you need to see the formerly changed files of a push, you can use the following commands to display specific information with or without a diff.
Display the last changes with a diff of the single files
git log -p
Display the last changes without diff but status information of the changed files
git log --name-status
Display the last changes without diff but additional status information of the changed files
git log --stat
Display the last changes without diff but status information for changed lines of the files
git log --numstat