Use git protocol

Author: tautschnig

.github/workflows/update-subtree.yml

@@ -45,7 +45,7 @@ jobs:
       run: |
         pushd ..
         git clone [email protected]:newren/git-filter-repo
-        git clone https://github.com/rust-lang/rust rust-tmp
+        git clone git@github.com:rust-lang/rust rust-tmp
         cd rust-tmp
 
         # Ensure "upstream/master" branch contains the target commit