Fix using git with kerberos authentication

jenkins/prepare_kit_conda

@@ -47,4 +47,8 @@ cp data/activate-conda.sh "${prefix}/bin/activate"
 cp data/activate-conda.csh "${prefix}/bin/activate.csh"
 sed -i "s&%PREFIX%&${prefix}&g" "${prefix}/bin/LbEnv.sh" "${prefix}/bin/LbEnv.csh" "${prefix}/bin/activate" "${prefix}/bin/activate.csh"
 
+# Fix cloning with kerberos authentication
+# https://docs.gitlab.com/ee/integration/kerberos.html#http-basic-access-denied-when-cloning
+echo -e "[http]\n\temptyAuth = true" >> ~/.gitconfig
+
 sha1sum "${prefix}/.environment.yml" | awk '{print substr($1, 0, 10)}' > "${prefix}/.checksum.txt"