git edit first commit

git.sh

# rebase from the first commit included
git rebase -i --root

# generate a tiny changelog
git log --no-merges <tag or commit-id>.. --oneline

# search if a branch contains a specific commit
git branch --contains <commit-id>

##################
# retrieve some history
# on specific file
 git rev-list --all -- "*reproducer.rst" 
 git log --name-only --oneline --all -- "*reproducer.rst" 
 # display date and authors
 git log --oneline --no-merges --pretty=format:"%h%x09%an%x09%ad%x09%s" v2.1.4..v4.2.0 
 
 # Which commit (sha only) deleted a file 
 git log --format=%H --all --diff-filter=D -- puppet/services/docker.yaml
 
 # List since a file was deleted (since openstack branch) 
  git branch -r --contains $(git log --format=%H --all --diff-filter=D -- puppet/services/docker.yaml) | grep -v master | sort