You are right.
User-manager is not present in the repositories.
But, what package has installed these packages in -git version?
And is safe to uninstall them?
On my other Manjaro (on my laptop) user-manager-git isn’t installed (I suppose because I installed manjaro there with a regular ISO Live).
Do you think is safe uninstall it?
I could do a command like this:
sudo pacman -Rdd <package>-git
and then
sudo pacman -S <package>
I found another post with the same problem (less then one month ago), but without a solution reply.