📝 Git Notes
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Waylon Walker's Git Notes

Date: January 15, 2026

See old revisions of one file
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[code]
  git log --oneline -- <file>
  git log -n 2 --oneline -- <file>

Checkout an old revision of a file
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[code]
  git checkout <commit> -- path/to/file

fuzzy pick a file and check out an old revision
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[code]
  #!/usr/bin/env bash
  set -euo pipefail
  
  file="${1:-}"
  
  if [[ -z "${file}" ]]; then
    file="$(git ls-files | fzf --prompt="select file > ")" || exit 0
  fi
  
  if [[ -z "${file}" ]]; then
    exit 0
  fi
  
  if ! git rev-parse --is-inside-work-tree >/dev/null 2>&1; then
    echo "Not a git repository." >&2
    exit 1
  fi
  
  if ! git ls-files --error-unmatch -- "${file}" >/dev/null 2>&1; then
    echo "File is not tracked by git: ${file}" >&2
    exit 1
  fi
  
  choice="$(
    git log --follow --pretty=format:'%h %ad %s' --date=short -- "${file}" |
      fzf --ansi --no-sort --reverse \
          --preview-window=down:70% \
          --prompt="checkout revision > " \
          --preview "git show --color=always {1}^..{1} -- '${file}' 2>/dev/null || git show --color=always {1} -- '${file}'"
  )"
  
  if [[ -z "${choice}" ]]; then
    exit 0
  fi
  
  commit="$(awk '{print $1}' <<<"${choice}")"
  git checkout "${commit}" -- "${file}"