Thanks for your question.
Section 128 of The Australian Constitution provides for the Constitution to be changed in a process called a referendum. A referendum is a vote by Australians to decide if they will support or reject a bill—a proposed law—to change the Australian Constitution, including changes to the first 8 clauses of the Constitution.
The first 8 clauses are often called the 'covering clauses' which enabled the 6 British colonies—New South Wales, Victoria, Queensland, South Australia, Western Australia and Tasmania to unite to form the Commonwealth of Australia in 1901, a process known as federation. Therefore, it is unlikely that any referendums would be proposed to change those 8 clauses today.