Git中HEAD和分支名称之间的区别

Question

这两个使用git的语句有什么区别？

@app.route("/upload", methods=['POST'])
def upload():

    target = os.path.join(APP_ROOT, 'images/')

    if not os.path.isdir(target):
        os.mkdir(target)

    #request.files.getlist(files)
    for file in request.files.getlist("file"):
        print(file)
        filename = file.filename
        destination = "/".join([target, filename])
        print(destination)
        file.save(destination)

    return "complete.html"

有区别吗？