Klipper-Backup is a script for manual or automated GitHub backups. It's Lightweight, pragmatic and comfortable.
I would suggest reading the docs, as this provides detailed step-by-step instructions and further tips.
Important
If you have already used the script before release 1.0, please read this docs section before opening an issue!
Minimal 3DP has created a video about the initial setup and use of Klipper-Backup and made it available on YouTube. This and the wiki should explain many questions in advance.