Hello,
I am installing postgresql for jessie-pgdg, but not able to find the
repo for jessie-pgdg. Kindly help to find where can we find the
jessie-pgdg repo
Hello
Debian jessie is EOL for a long time (since July 2020).
Try using the archive https://apt-archive.postgresql.org/ but don't expect the latest versions.
regards, Sergei