Hey @Jean_Lay_Reedy!
So unless you’re using Git LFS 2.0 or higher, Git does not support the checking out (file locking) of files. But yes, anything the older versions were able to do with source control, the new ones can, and it’s actually more streamlined with integration in UE5! Epic uses Perforce, and that’s what I use, personally. Subversion is also an option.
The reason non-LFS git doesn’t work is due to everyone having a copy vs it being stored on an external server- there’s no way to lock it on everyone’s storage.
Hope this helps!