Try straight download of picotls
COMMIT_ID=d18549f4586a43ec5fadbbdd1d0aa640a2bd75fe
cd ..
-git clone --branch master --single-branch --shallow-submodules --recurse-submodules --no-tags https://github.com/h2o/picotls
+# git clone --branch master --single-branch --shallow-submodules --recurse-submodules --no-tags https://github.com/h2o/picotls
+git clone https://github.com/h2o/picotls
cd picotls
git checkout -q "$COMMIT_ID"
git submodule init
