I am not a programmer nor am I in IT, but I like to use some of the same tools they use. I use Emacs for writing fiction and I like it a lot. One of the packages I use with Emacs is git-timemachine, which allows me to visualize all the previously commited versions of the file I am currently working on. It serves as a very good and very reliable undo system. All my writing is on a private repo on Github. My usage is so simple and basic, Git/Github only serves as a kind of backup and undo (I know Git is not a backup, so I regularly download my repos as zips and send to OneDrive as an extra. They are also always available offline in the machines work, of course).

The problem is, sometimes I work on different machines, and sometimes on different operating systems on the same machine (via dual boot). So I would like to know if there's an easy way to always "sync" the local mirror I am currently working on with the latest changes (also making sure that all changes are pushed). Essentially, I am asking if I can make Git work like Dropbox or OneDrive by automatically accept changes as long as they are the most recent version of a file. I do not wish to go through diffs approving every single change.

I understand I could use something like rclone for that, but their bisync feature is still very new and not considered reliable. Also, I already use Git and it is good for me. So I would prefer not adding an extra piece to the puzzle.

I am familiar with cron, have an elementary understanding of shell scripts, and can follow instructions.

So, can Git do the job?