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
Cloning into bare repository '/srv/scratch/qa.debian.org/vcswatch/p/petsc'...
Permission denied (publickey).
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.