vcswatch reports that
there is an error with this package's VCS, or the debian/changelog file inside
it. Please check the error shown below and try to fix it. You might have
to update the VCS URL in the debian/control file to point to the correct
repository.
fatal: bad revision '3d4c5c288429a027c3db6632d40b807dd9b6cfd0'
error: https://salsa.debian.org/gnome-team/gnome-flashback.git did not send all necessary objects
fatal: could not fetch 3d4c5c288429a027c3db6632d40b807dd9b6cfd0 from promisor remote
fatal: fetch-pack: invalid index-pack output