ci: run fresh-install workflows only in the upstream repo #713

Job	Run time
toolchain: gcc (cold self-host)	6m 24s
toolchain: musl + llvm	6m 45s
build + unit tests (linux x86_64, self-host)	8m 9s
integration: mcpp builds & runs xlings	6m 6s
	27m 24s

Navigation Menu