git subtree add --prefix upstream/catchchat_server git@github.com:CatchChat/catchchat_server.git develop --squash
git subtree pull --prefix upstream/catchchat_server git@github.com:CatchChat/catchchat_server.git develop --squash
git subtree add --prefix upstream/catchchat_server git@github.com:CatchChat/catchchat_server.git develop --squash
git subtree pull --prefix upstream/catchchat_server git@github.com:CatchChat/catchchat_server.git develop --squash