Related, in https://www.debian.org/doc/manuals/developers-reference/pkgs.html#nmus-from-the-maintainer-s-point-of-view we now have:
*** Note that easiest way to both check if your package has been NMUed, and also automatically download and commit the changes into a git-buildpackage maintained git repository is to run gbp import-dsc --verbose --pristine-tar apt:<package>/sid. This example command assumes you are working on the debian/latest branch preparing the next upload to Debian unstable, and it assumes your apt has the deb-src line active for Debian unstable. *** Ideally though git-buildpackage could automatically check and warn if the Debian archive has newer versions, and suggest the user to import into git the NMUed version. Perhaps this could be an extra check that runs version related commands are invoked, such as `gbp clone`, `gbp import-*` or `gbp dch`.
