The official PostGIS code repository is a git repository hosted on
OSGeo ​Gitea instance (​https://git.osgeo.org/gitea/postgis/postgis).

To get the source from main repo, and start a configure:
{{{
git clone https://git.osgeo.org/gitea/postgis/postgis.git
cd postgis
./autogen.sh
./configure
}}}

If you would like to submit pull requests via the main repo, you will first need an 
[[https://id.osgeo.org/ldap/create|OSGeo LDAP ID]]

A number of CodeMirrors do exist for users and contributor's convenience.