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adrs/0153-checkout-v2.md

@@ -111,8 +111,8 @@ The user host key database (`~/.ssh/known_hosts`) will be copied to a unique fil
 
 The SSH command will be overridden for the local git config:
 
-```
-git config core.sshCommand "ssh -i path-to-ssh-key -o StrictHostKeyChecking=yes -o CheckHostIP=no -o UserKnownHostsFile=path-to-known-hosts"
+```sh
+git config core.sshCommand 'ssh -i "$RUNNER_TEMP/path-to-ssh-key" -o StrictHostKeyChecking=yes -o CheckHostIP=no -o "UserKnownHostsFile=$RUNNER_TEMP/path-to-known-hosts"'
 ```
 
 When the input `ssh-strict` is set to `false`, the options `CheckHostIP` and `StrictHostKeyChecking` will not be overridden.
@@ -123,6 +123,7 @@ Note:
   and noisy. For example:
   > Warning: Permanently added the RSA host key for IP address '140.82.113.4' to the list of known hosts.
 - Since GIT_SSH_COMMAND overrides core.sshCommand, temporarily set the env var when fetching the repo.
+- Modify actions/runner to mount RUNNER_TEMP to enable scripting authenticated git commands from a container action.
 - Refer [here](https://linux.die.net/man/5/ssh_config) for SSH config details.
 
 ### Fetch behavior