minor: apply patch after fetching source on MCI

Author: TylerBrock

.mci.yml

@@ -160,6 +160,9 @@ tasks:
     - name: lint
       commands:
         - func: "fetch source"
+        - command: git.apply_patch
+          params:
+            directory: "mongo-cxx-driver"
         - command: shell.exec
           params:
             working_dir: "mongo-cxx-driver"
@@ -171,6 +174,9 @@ tasks:
     - name: compile
       commands:
         - func: "fetch source"
+        - command: git.apply_patch
+          params:
+            directory: "mongo-cxx-driver"
         - command: shell.exec
           params:
             working_dir: "mongo-cxx-driver"