De acordo com a página de manual man scp
:
File names may contain a user and host specification to indicate that the
file is to be copied to/from that host. Local file names can be made
explicit using absolute or relative pathnames to avoid scp treating file
names containing ‘:’ as host specifiers. Copies between two remote hosts
are also permitted.
Assim, você pode preceder o nome do arquivo local com um caminho absoluto ou apenas o caminho relativo simples ./
, ou seja,
scp "./vogo_psql_db:2017-08-30T18:00:01.762662" "[email protected]:db-dump"