How to do it...

The procedure to put the Git timestamp in the STATIC_URL setting consists of the following two steps:

1. If you haven't done so yet, create the myproject.apps.core app in your Django project. You should also create a versioning.py file there:

# versioning.py
import subprocess
from datetime import datetime


def get_git_changeset_timestamp(absolute_path):
    repo_dir = absolute_path
    git_log = subprocess.Popen(
        "git log --pretty=format:%ct --quiet -1 HEAD",
        stdout=subprocess.PIPE,
        stderr=subprocess.PIPE,
        shell=True,
        cwd=repo_dir,
        universal_newlines=True,
    )

    timestamp = git_log.communicate()[0]
    try:
        timestamp = datetime.utcfromtimestamp(int(timestamp))
    except ValueError:
        # Fallback to current timestamp
        return datetime.now().strftime('%Y%m%d%H%M%S')
    changeset_timestamp = timestamp.strftime('%Y%m%d%H%M%S')
    return changeset_timestamp

2. Import the newly created get_git_changeset_timestamp() function in the settings and use it for the STATIC_URL path, as follows:

# settings/_base.py
from myproject.apps.core.versioning import get_git_changeset_timestamp
# ...
timestamp = get_git_changeset_timestamp(BASE_DIR)
STATIC_URL = f'/static/{timestamp}/'