fix(ci): 采用标准 git clone 与 protocol v1 规避浅克隆空 refspec 异常

.drone.yml

@@ -20,10 +20,8 @@ steps:
     image: alpine/git
     commands:
       - "git config --global http.version HTTP/1.1"
-      - "git config --global http.postBuffer 524288000"
-      - "git init"
-      - "git remote add origin ${DRONE_REMOTE_URL}"
-      - "git fetch --depth=50 origin +refs/heads/${DRONE_COMMIT_BRANCH}:"
+      - "git config --global protocol.version 1"
+      - "git clone --depth=50 -b ${DRONE_COMMIT_BRANCH} ${DRONE_REMOTE_URL} ."
       - "git checkout -qf ${DRONE_COMMIT_SHA}"
 
   - name: install