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 'e2c7da5b489cd9d05e7a8dccd99276b322961bc8'
error: https://salsa.debian.org/debian/perceptualdiff.git did not send all necessary objects
fatal: could not fetch e2c7da5b489cd9d05e7a8dccd99276b322961bc8 from promisor remote
fatal: fetch-pack: invalid index-pack output