Copy the entire path (including subdirectories) to your local texmf directory. Alternatively simply run the following bash commands:
if [[ "$OSTYPE" == 'darwin'* ]]; then
mkdir -p ~/Library/texmf
git clone https://github.com/petobens/mybibformat ~/Library/texmf
else
mkdir -p ~/texmf
git clone https://github.com/petobens/mybibformat ~/texmf
fi
To use this citation style, include the next lines in your TeX document preamble:
\usepackage[style=authoryear-comp,backref=true,hyperref=false, backend=biber]{biblatex}
\usepackage{mybibformat}