In case it is useful, the following thornlist downloads and installs only the components that are necessary to run the TOV test (and also a Riemann problem) with GRHydro: https://raw.githubusercontent.com/bgiacoma/notebooks/main/Einstein_Toolkit_T...
Instructions are also available in the README file here: https://github.com/bgiacoma/notebooks/tree/main/Einstein_Toolkit_Tutorials
I made this for my master's course in Numerical Relativity. The thornlist was built using Cactus/utils/Scripts/MakeThornList I also made some small changes to the thornlist produced by the script in order to completely remove repositories from which nothing was checked out. I did this to avoid the GetComponents warning that nothing was checked out from some repositories.
Cheers, Bruno