📝 Git Notes
===========

Waylon Walker's Git Notes

Date: January 15, 2026

## See old revisions of one file

``` bash
git log --oneline --
git log -n 2 --oneline --
```

## Checkout an old revision of a file

``` bash
git checkout -- path/to/file
```

## fuzzy pick a file and check out an old revision

``` bash
#!/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}"
```