Perhaps we can derive the core beliefs of the Republican party from their 2020 platform. Given that that is how political parties typically express such things, it seems reasonable.
Strictly, that meant that the 2016 platform remained in force, and they blamed the inability to derive a new one on COVID. But it doesn't speak particularly well of them not to be seriously considering the fundamental statement of what it is the party wants to do.
“RESOLVED, That the Republican National Convention will adjourn without adopting a new platform until the 2024 Republican National Convention.”
https://prod-cdn-static.gop.com/docs/Resolution_Platform_202...
Strictly, that meant that the 2016 platform remained in force, and they blamed the inability to derive a new one on COVID. But it doesn't speak particularly well of them not to be seriously considering the fundamental statement of what it is the party wants to do.