Support cloning / git pulling from non-tagged commits

[kethinov]

Right now if you you set -b to something that isn't a tagged commit, it will clone, but it will fail to re-validate when you re-run the postinstall script because it fails const output = spawnSync('git', ['describe', '--tags'], { ....

To resolve this, we need to recognize when -b is set to something that isn't a tagged commit and instead of doing the git describe, we do a git fetch, git status or git log instead to see if there are new commits, then do a git pull instead of checking to see if we need to re-clone.

e.g.

const { exec } = require('child_process');

function checkForNewCommits() {
  // Fetch the latest changes from the remote repository
  exec('git fetch', (fetchError, fetchStdout, fetchStderr) => {
    if (fetchError) {
      console.error(`Error fetching from remote: ${fetchError}`);
      return;
    }

    // Compare the local branch with the remote branch
    exec('git status -uno', (statusError, statusStdout, statusStderr) => {
      if (statusError) {
        console.error(`Error checking status: ${statusError}`);
        return;
      }

      // Check if there are new commits
      if (statusStdout.includes('Your branch is behind')) {
        console.log('There are new commits available.');
      } else {
        console.log('Your branch is up to date.');
      }
    });
  });
}

// Example usage
checkForNewCommits();

If this is successfully implemented, we could probably reuse the logic elsewhere as well to prevent re-cloning in situations where it is not necessary. For example, if you have -b 1.0.0 that is a tagged commit on main, then you update it to -b 1.0.1 which is a new tagged commit also on main, it would be nice if instead of re-cloning, it simply does a fetch and pull, but only pull the commits up to the new tag via git checkout tags/1.0.1 or whatever.

e.g.

const { exec } = require('child_process');

function pullUpToTag(tag) {
  // Fetch all tags from the remote repository
  exec('git fetch --tags', (fetchError, fetchStdout, fetchStderr) => {
    if (fetchError) {
      console.error(`Error fetching tags: ${fetchError}`);
      return;
    }

    // Checkout the specific tag
    exec(`git checkout tags/${tag}`, (checkoutError, checkoutStdout, checkoutStderr) => {
      if (checkoutError) {
        console.error(`Error checking out tag ${tag}: ${checkoutError}`);
        return;
      }

      console.log(`Successfully checked out tag ${tag}`);
    });
  });
}

// Example usage
pullUpToTag('1.0.1');