Git alias:
intercommit = !sh -c 'git show "$1" > .git/commit1 && git show "$2" > .git/commit2 && interdiff .git/commit[12] | less -FRS' -
Example:
git intercommit
If upstream applied a slightly modified patch, and we want to see the
modifications, then we use the program interdiff
of the
patchutils package, and call “interdiff” between commits.