tested on v.2.9.0

ginkgo -coverpkg=./... -coverprofile=ginko.out --output-dir build/ ./...

go test -coverpkg=./... -coverprofile=build/gotest.out ./...

number of lines in the ginkgo.out 85
number of lines in the gotest.out 773

I tried in specific folders within my project like ./cli where my cobra commands are in place
and same behaviour but at folder level, less lines of test are covered in ginkgo.
After comparing 2 files, I have the feeling that ginkgo only take into account coverage of code of the instructed folder, but this folder is possible is calling to functions in other packages.