Switching branches in git forces QBS to recompile files over and over in some cases

I have a repo in which a certain file has switched locations between git branches, now after I switch between those branches QBS build graph ends up stuck in a state that makes it recompile the files dependant on that file each time until the build graph is deleted completely (forcing a full recompile).

I am attaching a minimal repository that reproduces that problem.

check out the initial commit, build repro.qbs,
checkout the second commit, build repro.qbs,
check out the initial commit, build repro.qbs, now build again (incremental, not full rebuild)
FieldFactoryBase.cpp will get rebult over, and over, and over. Despite it being up to date

Tracing the --vv of the qbs build shows that it repeatedly tries to access FieldFactoryBase.h (the file that switched locations) using its old path