SDK Tools Release Notes
https://developer.android.com/studio/releases/sdk-tools.html

SDK Platform Tools Release Notes
https://developer.android.com/studio/releases/platform-tools.html
https://dl.google.com/android/repository/platform-tools-latest-linux.zip

Possible versions:
https://dl.google.com/android/repository/repository2-1.xml

Mirror of google repository:
https://mirrors.zzu.edu.cn/android/repository/