The current CentOS environment has a lot of older installs. I was able to update Git to something more recent but when I attempt to install Homebrew I hit an issue with the old Curl available on Opalstack. Before installing Homebrew I tried to install the latest Curl manually:
gunzip -c curl-7.67.0.tar.gz | tar xvf -
./configure --prefix=$HOME/opt --mandir=$HOME/usr --with-ssl
The installation seemed fine but
curl --version still shows "7.29.0"