Recently I installed in a Fiware instance STH-Comet through the command:
git clone https://github.com/telefonicaid/fiware-sth-comet.git
cd fiware-sth-comet
npm install
Today I went to install again and when cloning the STH-Comet repository the following error arose:
Initialized empty Git repository in /etc/fiware-sth-comet/.git/ error: while accessing https://github.com/telefonicaid/fiware-sth-comet.git/info/refs fatal: HTTP request failed**
Have there been any changes to the STH-Comet repository?
Maybe, it is due a permission denied. Try to set up your public key on github. Instructions here: https://help.github.com/articles/generating-ssh-keys/ and check it again. There were no changes in that repository.