A lot of times I switch git branches without relaunching/reloading helix. Then upon attempting to write, it informs me that the file has been modified by an external process. The problem is that this gets emitted even if only the file timestamp changes, regardless of whether or not the file contents actually changed.

Instead, if Helix notices a timestamp change then there should be a fallback method, such as a hash of the file contents, to determine whether or not writing needs to be blocked and this message shown. sha1_smol would probably work well enough and is already in the dependency graph, or blake3 would be faster since it leverages mmap and parallelization.