by untheoretic:

1) please as default just "get" the source (security first):

go get code.google.com/p/gosqlite/sqlite

sqlite.go: In function ‘_cgo_98ed2c6f47a0_Cfunc_sqlite3_prepare_v2’:
sqlite.go:290:2: warning: passing argument 5 of ‘sqlite3_prepare_v2’ from
incompatible pointer type [enabled by default]
/usr/include/sqlite3.h:2839:16: note: expected ‘const char **’ but argument is of
type ‘char **’
# code.google.com/p/gosqlite/sqlite
sqlite.go:168[/tmp/go-build983582224/code.google.com/p/gosqlite/sqlite/_obj/sqlite.cgo1.go:171]:
cannot use sleepNs (type int64) as type time.Duration in function argument
sqlite.go:228[/tmp/go-build983582224/code.google.com/p/gosqlite/sqlite/_obj/sqlite.cgo1.go:231]:
undefined: time.Nanoseconds
sqlite.go:328[/tmp/go-build983582224/code.google.com/p/gosqlite/sqlite/_obj/sqlite.cgo1.go:331]:
undefined: strconv.Atoi64
sqlite.go:334[/tmp/go-build983582224/code.google.com/p/gosqlite/sqlite/_obj/sqlite.cgo1.go:337]:
undefined: strconv.Atof64
sqlite.go:351[/tmp/go-build983582224/code.google.com/p/gosqlite/sqlite/_obj/sqlite.cgo1.go:354]:
undefined: time.Nanoseconds

----

2) -x -n should just print the checkout command:

go get -x -n -d code.google.com/p/gosqlite/sqlite
cd .
hg clone -U https://code.google.com/p/gosqlite /nogo/src/code.google.com/p/gosqlite
cd /nogo/src/code.google.com/p/gosqlite
hg tags
cd /nogo/src/code.google.com/p/gosqlite
hg branches
cd /nogo/src/code.google.com/p/gosqlite
hg update default

tree 
.
└── src
    └── code.google.com
        └── p
            └── gosqlite
                └── sqlite
                    └── sqlite.go
----

3) go clean - nothing happens

cd src/code.google.com/p/gosqlite/sqlite
go fix
sqlite.go: fixed time+fileinfo strconv
vi sqlite.go hack hack
go install
# code.google.com/p/gosqlite/sqlite
sqlite.go: In function ‘_cgo_ad8b4114c021_Cfunc_sqlite3_prepare_v2’:
sqlite.go:237:2: warning: passing argument 5 of ‘sqlite3_prepare_v2’ from
incompatible pointer type [enabled by default]
/usr/include/sqlite3.h:2839:16: note: expected ‘const char **’ but argument is of
type ‘char **’

sqlite.go:237 - wrong line (filled issue)

go clean

----

4) please add an option to leave the intermediate files

# github.com/mattn/go-gtk/gtk
/tmp/go-build256765935/github.com/mattn/go-gtk/gtk/_obj/_cgo_gotypes.go:1: ambiguous
selector *_Ctype_GtkProgressBar._
/tmp/go-build256765935/github.com/mattn/go-gtk/gtk/_obj/_cgo_gotypes.go:1: ambiguous
selector _Ctype_GtkProgressBar._
/tmp/go-build256765935/github.com/mattn/go-gtk/gtk/_obj/_cgo_gotypes.go:1: cannot use
&p._ (type *[4]byte) as type *[8]byte in function argument
/tmp/go-build256765935/github.com/mattn/go-gtk/gtk/_obj/_cgo_gotypes.go:1: ambiguous
selector *_Ctype_GtkProgressBar._
/tmp/go-build256765935/github.com/mattn/go-gtk/gtk/_obj/_cgo_gotypes.go:1: ambiguous
selector _Ctype_GtkProgressBar._
/tmp/go-build256765935/github.com/mattn/go-gtk/gtk/_obj/_cgo_gotypes.go:1: ambiguous
selector *_Ctype_GtkProgressBar._
/tmp/go-build256765935/github.com/mattn/go-gtk/gtk/_obj/_cgo_gotypes.go:1: ambiguous
selector _Ctype_GtkProgressBar._
/tmp/go-build256765935/github.com/mattn/go-gtk/gtk/_obj/_cgo_gotypes.go:1: ambiguous
selector *_Ctype_GtkFrame._
/tmp/go-build256765935/github.com/mattn/go-gtk/gtk/_obj/_cgo_gotypes.go:1: ambiguous
selector _Ctype_GtkFrame._
/tmp/go-build256765935/github.com/mattn/go-gtk/gtk/_obj/_cgo_gotypes.go:1: ambiguous
selector *_Ctype_GtkFrame._
/tmp/go-build256765935/github.com/mattn/go-gtk/gtk/_obj/_cgo_gotypes.go:1: too many
errors

vi /tmp/go-build256765935/github.com/mattn/go-gtk/gtk/_obj/_cgo_gotypes.go

oops ...