By the way, out of curiosity I tried the same for gitk.
$ make po/gitk.pot
$ make
Generating catalog po/es.msg
msgfmt --statistics --tcl po/es.po -l es -d po/
192 translated messages, 34 fuzzy translations, 63 untranslated messages.
Generating catalog po/fr.msg
msgfmt --statistics --tcl po/fr.po -l fr -d po/
271 translated messages, 11 fuzzy translations, 7 untranslated messages.
Generating catalog po/hu.msg
msgfmt --statistics --tcl po/hu.po -l hu -d po/
287 translated messages, 1 fuzzy translation, 1 untranslated message.
Generating catalog po/it.msg
msgfmt --statistics --tcl po/it.po -l it -d po/
282 translated messages, 1 fuzzy translation, 6 untranslated messages.
Generating catalog po/ja.msg
msgfmt --statistics --tcl po/ja.po -l ja -d po/
281 translated messages, 4 fuzzy translations, 4 untranslated messages.
Generating catalog po/ru.msg
msgfmt --statistics --tcl po/ru.po -l ru -d po/
234 translated messages, 19 fuzzy translations, 36 untranslated messages.
Generating catalog po/sv.msg
msgfmt --statistics --tcl po/sv.po -l sv -d po/
289 translated messages.