See old revisions of one file
git log --oneline -- <file>
git log -n 2 --oneline -- <file>
Checkout an old revision of a file
git checkout <commit> -- path/to/file
fuzzy pick a file and check out an old revision
#!/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}"
