fetch depth with sha

service.yaml

@@ -1 +1 @@
-version: 10.1.24
+version: 10.1.25

start.sh

@@ -76,6 +76,22 @@ git_checkout () {
   git checkout $revision
 }
 
+init_and_add_remote() {
+    git_retry git init
+    git_retry git remote add origin $REPO
+}
+
+init_and_fetch() {
+    init_and_add_remote
+
+    if [ -n "$REVISION" ]; then
+        if [ -n "$DEPTH" ]; then
+          eval $GIT_FETCH_COMMAND
+        fi
+      git_checkout
+    fi
+}
+
 trap exit_trap EXIT
 set -e
 
@@ -169,9 +185,9 @@ if [ -n "$SPARE_CHECKOUT" ]; then
  fi
 
 if [ -n "$DEPTH" ]; then
-  GIT_COMMAND="git_retry git clone $REPO $CLONE_DIR --depth=$DEPTH"
+  GIT_FETCH_COMMAND="git_retry git fetch --depth=$DEPTH origin $REVISION"
 else
-  GIT_COMMAND="git_retry git clone $REPO $CLONE_DIR"
+  GIT_FETCH_COMMAND="git_retry git fetch origin $REVISION"
 fi
 
 # Check if the cloned dir already exists from previous builds
@@ -214,32 +230,14 @@ if [ -d "$CLONE_DIR" ]; then
           fi
       fi
   else
-      # The folder already exists but it is not a git repository
-      # Clean folder and clone a fresh copy on current directory
-      cd ..
-      rm -rf $CLONE_DIR
-      eval $GIT_COMMAND
-      cd $CLONE_DIR
-
-      if [ -n "$REVISION" ]; then
-          if [ -n "$DEPTH" ]; then
-            git_retry git remote set-branches origin "*"
-            git_retry git fetch --depth=$DEPTH
-          fi
-        git_checkout
-      fi
+    # The folder already exists but it is not a git repository
+    echo 'Fetching updates according to revision'
+    init_and_fetch
   fi
 else
-
- # Clone a fresh copy
-  eval $GIT_COMMAND
-  cd $CLONE_DIR
-  if [ -n "$REVISION" ]; then
-      if [ -n "$DEPTH" ]; then
-        git_retry git remote set-branches origin "*"
-        git_retry git fetch --depth=$DEPTH
-      fi
-    git_checkout
-  fi
-
+   # Fresh fetch
+    echo 'Fetching updates according to revision from fresh copy'
+    mkdir $CLONE_DIR
+    cd $CLONE_DIR
+    init_and_fetch
 fi