Make the current commit the only (initial) commit in a Git repository?

Here I am solving this question with a brute-force approach.

Note: This approach will not work if your repository has submodules. For repository having submodules, you should use interactive rebase.

Let’s see the brute-force approach

Step1: Remove all history(make sure you have the backup) using:

cat .git/config  # note 
rm -rf .git

Step2: Reconstruct the git repo with the current content:

git init
git add .
git commit -m "Initial commit"
Step3: Push the commit to github
git remote add origin 
git push -u --force origin master

Thus, you can make current commit to the only commit in a git repository.

Git initial commit: For projects that already have some code files written and ready to go, the initial commit usually includes all of those code files in one big chunk. This commit acts as the starting revision for the project in Git. Developers will build off of this to add more features and functionality to the project.

What Does Git Initial Commit Do?

The git commit command captures a snapshot of the project's currently staged changes. Committed snapshots can be thought of as “safe” versions of a project—Git will never change them unless you explicitly ask it to.