Add custom multibranch pipeline runner.

tasks/j7s-git-clone-hash.yaml

@@ -0,0 +1,23 @@
+apiVersion: tekton.dev/v1beta1
+kind: Task
+metadata:
+  name: j7s-git-clone-hash
+  namespace: j7s-ci
+spec:
+  workspaces:
+  - name: output
+  - name: ssh-directory
+  params:
+  - name: url
+  - name: hash
+  steps:
+  - image: 192.168.1.149:8443/gitssh:latest
+    script: |
+      set -x
+      cp -r $(workspaces.ssh-directory.path) ~/.ssh
+      chmod 700 ~/.ssh
+      chmod -R 400 ~/.ssh/*
+
+      git clone $(params.url) $(workspaces.output.path)
+      cd $(workspaces.output.path)
+      git checkout $(params.hash)