You could try the devtools package:
install_github("DeveloperName/PackageName")
If your package is failing due to a 'non-zero exit status' error, try this:
Sys.setenv("R_REMOTES_NO_ERRORS_FROM_WARNINGS" = "true")
Then back to
remotes::install_github("kgellatl/COLDNet")
I just learned about the fix recently. It's Freakin' sweet!