Dear All,
I could find GitHub - sailfish-on-dontbeevil/pinephonepro-image-maker. Thanks to @piggz and it says
“Copy the file sfe-pinephonepro-XXXXXX.tar.bz2 obtained from the CI build Pipelines · sailfishos-porters-ci / dont_be_evil-ci · GitLab
into the folder and run make_release.sh.”
However, I could not find any file named sfe-pinephonepro* there. Any pointer would be helpful.