[microflash]

I sync Obsidian notes with Git on my Android phone and I don't see any problem. You can do it the tedious way using Termux[1] or easy way through obsidian-git[2].

[1]: https://github.com/termux/termux-app

[2]: https://github.com/Vinzent03/obsidian-git

[khimaros]

there is also the open source MGit available in FDroid. it can work with arbitrary directories, so it is compatible with termux.