I used Debian Buster for the environment

sudo apt-get install build-essential git uuid-dev iasl nasm git

git clone git://github.com/tianocore/edk2.git
cd edk2
git submodule init
git submodule update
source ./edksetup.sh
make -C BaseTools/
build -a X64 -t GCC5 -b RELEASE -p OvmfPkg/OvmfPkgX64.dsc

Find the resulting binary at Build/OvmfX64/RELEASE_GCC5/FV/OVMF.fd