The basic ideal is that run a script to edit the date of the post before git commit command.

Make the post with the special character to update the date

Here I’m gonna replace the date in the line has _date:. This make it easy to find and replace.

---
title: "This is an template post"
_date:

Create a script to update the date

Not thing special about the script. The hook is located in: .git/hooks/pre-commit (the old name is pre-commit.sample, you have to remove the file’s postfix!)

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#!/usr/bin/env node

const { promisify } = require("util");
const exec = promisify(require("child_process").exec);
const fs = require("fs");

console.log("This is pre-commit hook!");

//! =========== Update time for the post ======
async function updateTimeForPost(path) {
  try {
    const content = fs.readFileSync(path, "utf8");
    const newDateStr = `date: ${new Date().toISOString()}`;
    const updatedContent = content.replace("_date:", newDateStr);
    fs.writeFileSync(path, updatedContent);

    await exec(`git add "${path}"`);
    await exec("git commit --amend -C HEAD --no-verify");
  } catch (err) {
    console.error(err);
  }
}
async function updateTimeForThePost() {
  console.log("Updating time for the new post...");
  //   const output = await exec("git diff --name-only --cached");
  //   const output = await exec("git status");
  const output = await exec(`git status | grep "new file:" | cut -c 14-`);
  console.log(`----`);
  if (output.stdout) {
    const filePaths = output.stdout
      .split("\n")
      .filter((row) => !!row && row.startsWith("content/post") && row.endsWith(".md"));
    console.log(JSON.stringify({ filePaths }));

    for (const path of filePaths) {
      await updateTimeForPost(path);
    }
  }

  console.log("---");
}

updateTimeForThePost();

Make sure you have the hooks

Copy your hooks into another folder out site of the .git. Then create a bash script to update the hooks to the local.

mkdir git-hooks
cp .git/hooks/* git-hooks/

File install-hook.sh

#!/bin/bash
cp git-hooks/* .git/hooks/
echo "Hooks installed."