Steps to build this package:
$ git clone --dept=1 https://github.com/minos-org/libpam-captcha-deb
$ cd libpam-captcha-deb
$ dch -i #insert proper upstream version (1:$(date +%Y%m%d%H%M)+git7digitsHash-minos)
$ debian/rules get-orig-source
$ mv debian libpam-captcha-*
$ cd libpam-captcha-*
[ Optional, make some adaptations, like updating debian/patches, if needed ]
[ document additional changes if required, $EDITOR debian/changelog ]
$ debuild -S
[ Build .dsc (pbuilder) || Upload .changes file (dput) ]