Reproduce the error message form intended failure more exactly
@@ -104,6 +104,9 @@ $ kubectl exec -n weave flux-85cdc6cdfc-n2tgf -ti -- \
env GITHOST="$GITHOST" GITREPO="$GITREPO" PS1="container$ " /bin/sh
container$ git clone $GITREPO
+Cloning into <repository name>...
+No ECDSA host key is known for <GITHOST> and you have requested strict checking.
+Host key verification failed.
fatal: Could not read from remote repository
container$ # ^ that was expected. Now we'll try with a modified known_hosts
