RFR: 1452: Can never notify on first commit [v2]

[Zhao Song]

On Tue, 4 Oct 2022 13:42:40 GMT, Erik Joelsson <erikj at openjdk.org> wrote:

> Solving this is more complex. I added more information to the bug.

Hi Erik, 

I want to confirm whether I understand you correctly.

Case1: Completely new repo or repo with few commits
In this situation, we should let the notify bot make notifications on the **first** commit and make notifications on every new commit.

Case2: Repo with a long history
In this situation, we should let the notify bot **not** make notifications on the **first** commit and make notifications on every new commit.

And currently, My solution will let the notify bot make notifications on the first commit whether the repo is new or the repo has a long history, so I should fix it.

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PR: https://git.openjdk.org/skara/pull/1385