What is the fundamental difference in how `HEAD` (a symbolic reference) and a tag (a direct reference) point to commits?

The fundamental difference in how `HEAD` and a tag point to commits lies in their nature as references: `HEAD` is a dynamic, symbolic reference, whereas a tag is a static, direct reference. `HEAD` is a symbolic reference, meaning it does not directly contain a commit's SHA-1 hash. Instead, `HEAD` typically points to a branch name, such as `refs/heads/main`. This indirection means that `HEA....