Check out commits in order, dumping commit messages in between.

git_commit_dump

#!/bin/bash
 
if [ -n "${1}" ]
then
  startref=${1}..
fi
 
# Record the starting location, branch or hash
branch_name="$(git symbolic-ref HEAD 2>/dev/null)" || branch_name="$(cat .git/HEAD)"
branch_name=${branch_name##refs/heads/}
 
echo "Alright, let's roll. The revision hash will be displayed followed by the commit message. Once you're happy with the state, hit enter to move on."
 
# Read each line as a single revision. (by not splitting on spaces)
IFS=$'\n'
 
# For each revision, earliest first. Check it out, echo the commit message and wait for the user to hit a key before continuing
for revision in $(git log --pretty=oneline ${startref} --reverse)
do
  git reset --hard -q $(echo ${revision} | cut -d' ' -f1) && echo ${revision} | cut -d' ' -f1 && echo ${revision} | cut -d' ' -f2-
  git reset HEAD^
  read notused
  # Undo our reset HEAD^
  git reset --hard -q $(echo ${revision} | cut -d' ' -f1)
done