/usr/share/gocode/src/github.com/pierrec/ is in golang-github-pierrec-xxhash-dev 0.1.1-4.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gocode/src/github.com/pierrec/xxHash/
/usr/share/gocode/src/github.com/pierrec/xxHash/xxHash32/
/usr/share/gocode/src/github.com/pierrec/xxHash/xxHash32/example_test.go
/usr/share/gocode/src/github.com/pierrec/xxHash/xxHash32/xxHash32.go
/usr/share/gocode/src/github.com/pierrec/xxHash/xxHash32/xxHash32_test.go
/usr/share/gocode/src/github.com/pierrec/xxHash/xxHash64/
/usr/share/gocode/src/github.com/pierrec/xxHash/xxHash64/example_test.go
/usr/share/gocode/src/github.com/pierrec/xxHash/xxHash64/xxHash64.go
/usr/share/gocode/src/github.com/pierrec/xxHash/xxHash64/xxHash64_test.go
/usr/share/gocode/src/github.com/pierrec/xxHash/xxhsum/
/usr/share/gocode/src/github.com/pierrec/xxHash/xxhsum/main.go