check git branches status

git_commands.sh

# Find common ancestor of 2 branches:
git rev-parse BRANCH1 BRANCH2

# Last commit date (relative time) on BRANCH
git --no-pager for-each-ref BRANCH --format='%(committerdate:relative)'

# Last commit date on BRANCH
git --no-pager show --format='%ai'
# Last commit author on BRANCH
git --no-pager show --format='%an'
# Last commit message on BRANCH
git --no-pager show --format='%s'

# Last commit for BRANCH
git --no-pager rev-parse BRANCH

# Branch name from commit / fullbranch name from branch name
git --no-pager rev-parse --symbolic-full-name BRANCH

# Find remote for BRANCH
upstream = git --no-pager rev-parse --symbolic-full-name BRANCH
if upstream startsWith('refs/remotes/'): return upstream
try:
  upstream = git --no-pager rev-parse --symbolic-full-name "${BRANCH}@{u}"
  return upstream
catch:
  upstream = git --no-pager rev-parse --symbolic-full-name "remotes/origin/${BRANCH}"
  if upstream: return upstream
  else retun None
  
# List branches merged in BRANCH
git --no-pager branch --sort=committerdate --format=%(refname:short) --merged BRANCH
# List branches not merged in BRANCH
git --no-pager branch --sort=committerdate --format=%(refname:short) --no-merged BRANCH
# List remote branches (--no-)merged in BRANCH
git --no-pager branch --remotes --sort=committerdate --format=%(refname:short) --merged BRANCH
# List remote branches (--no-)merged in BRANCH matching PATTERN
git --no-pager branch --remotes --list PATTERN --sort=committerdate --format=%(refname:short) --merged BRANCH

This is everything needed to look for branches status differences between branches and remote vs local