diff --git a/performance_tests.sh b/performance_tests.sh
index 6057572..44cc00d 100755
--- a/performance_tests.sh
+++ b/performance_tests.sh
@@ -70,7 +70,7 @@ test0(){
     echo "memory usage in a classic cloning : $mem"
     echo "bandwidth usage : $bw"    
     run rm cloning_text
-    #run rm -rf $REPO_NAME 
+    run rm -rf $REPO_NAME 
 }
 
 test1(){
@@ -106,7 +106,7 @@ test3(){
     echo "memory usage in a --depth=1 with single-branch cloning : $mem"
     echo "bandwidth usage : $bw"
     run rm cloning_text
-    #run rm -rf $REPO_NAME
+    run rm -rf $REPO_NAME
 }
 
 test4(){
@@ -125,7 +125,7 @@ test4(){
     echo "memory usage: $mem"
     echo "bandwidth usage : unknown"
     cd ..
-    #run rm -rf $REPO_NAME
+    run rm -rf $REPO_NAME
 }
 
 
@@ -158,7 +158,7 @@ test5(){
     cd ../$REMOTE
     git reset --hard -q HEAD~1
     cd ../..
-    #rm -rf performance_testing
+    rm -rf performance_testing
 }
 
 test6(){
@@ -186,7 +186,7 @@ test6(){
     git reset --hard -q HEAD~1
     git clean -df
     cd ../..
-    #rm -rf performance_testing
+    rm -rf performance_testing
 }
 
 test7(){
@@ -216,7 +216,7 @@ test7(){
     cd ../$REMOTE
     git reset --hard -q HEAD~2
     cd ../..
-    #rm -rf performance_testing
+    rm -rf performance_testing
 }
 
 test8(){
@@ -244,7 +244,7 @@ test8(){
     cd ../$REMOTE
     git reset --hard -q HEAD~1 
     cd ../..
-    #rm -rf performance_testing
+    rm -rf performance_testing
 }
 
 test9(){
@@ -271,7 +271,7 @@ test9(){
     cd ../$REMOTE
     git reset --hard -q HEAD~1
     cd ../..
-    #rm -rf performance_testing
+    rm -rf performance_testing
 }
 
 test10(){
@@ -301,7 +301,7 @@ test10(){
     cd ../$REMOTE
     git reset --hard -q HEAD~2
     cd ../..
-    #rm -rf performance_testing
+    rm -rf performance_testing
 }
 
 test11(){
@@ -320,7 +320,7 @@ test11(){
     git commit --quiet -m"second 1M sample created"
     cd ../../$REPO_NAME
     #fetching
-    run git submodule update --init --recursive --force --recommend-shallow --remote &> /dev/null
+    run git submodule update --init --recursive --force --depth=1 --remote &> /dev/null
     run git fetch --progress --tags --depth=1 origin #&> /dev/null
     git checkout -f origin/main #&> /dev/null
     get_storage_used .
@@ -330,7 +330,7 @@ test11(){
     cd ../$REPO_PATH/$SUB_NAME
     git reset --hard -q HEAD~1
     cd ../..
-    #rm -rf performance_testing
+    rm -rf performance_testing
 }
 
 test12(){
@@ -340,26 +340,26 @@ test12(){
     cd $REPO_NAME
     get_storage_used .
     mem_before=$mem
-   pwd
-    #modification of the remote repo  
-    cd ../$REMOTE/$SUB_NAME
-        ls -la
-        rm sub_sample1
-        git add sub_sample1
-        git commit -m"1M sub_sample1 deleted"
+    echo "mem before vaut $mem_before"
+    #modification of the remote submodule  
+    cd ..
+    cd $REPO_PATH/$SUB_NAME
+    rm sub_sample0
+    git add sub_sample0
+    git commit --quiet -m"1M 'sub_sample0' deleted"
     cd ../../$REPO_NAME
     #fetching
-    run git submodule update --init --recursive --force --recommend-shallow
-    run git fetch --progress --tags --depth=1 --recurse-submodules origin &> /dev/null
-    git checkout -f --recurse-submodules origin/main &> /dev/null
+    run git submodule update --init --recursive --force --depth=1 --remote &> /dev/null
+    run git fetch --progress --tags --depth=1 origin #&> /dev/null
+    git checkout -f origin/main #&> /dev/null
     get_storage_used .
     mem_after=$mem
     mem=$(($mem_after-$mem_before))
     echo "memory usage: $mem"
-    cd ../$REMOTE
-    git reset --hard -q HEAD~2
+    cd ../$REPO_PATH/$SUB_NAME
+    git reset --hard -q HEAD~1
     cd ../..
-    #rm -rf performance_testing
+    rm -rf performance_testing
 }
 
 
@@ -368,31 +368,31 @@ test13(){
     run echo 'TEST 13 : case of --depth=1 fetching and merging, after addition then removal of a 1M file in submodule'
     run git clone --recurse-submodules $1 &> /dev/null
     cd $REPO_NAME
-    run git fetch --progress origin &> /dev/null
-    run git merge --progress origin &> /dev/null
     get_storage_used .
     mem_before=$mem
-    #modification of the remote repo  
-    cd ../$REMOTE/$SUB_NAME
-        create_random_file 'sub_sample1' '5M'
-        git add sub_sample1
-        git commit -m"first 1M sample created"
-        rm sub_sample1
-        git add sub_sample1
-        git commit -m"1M sub_sample1 deleted"
+    echo "mem before vaut $mem_before"
+    #modification of the remote submodule  
+    cd ..
+    cd $REPO_PATH/$SUB_NAME
+    create_random_file 'sub_sample1' '1M'
+    git add sub_sample1
+    git commit --quiet -m"second 1M sample created"
+    rm sub_sample1
+    git add sub_sample1
+    git commit --quiet -m"1M 'sub_sample1' deleted"
     cd ../../$REPO_NAME
     #fetching
-    run git submodule update --init --recursive --force --recommend-shallow
-    run git fetch --progress --tags --depth=1 --recurse-submodules origin &> /dev/null
-    git checkout -f --recurse-submodules origin/main &> /dev/null
+    run git submodule update --init --recursive --force --depth=1 --remote &> /dev/null
+    run git fetch --progress --tags --depth=1 origin #&> /dev/null
+    git checkout -f origin/main #&> /dev/null
     get_storage_used .
     mem_after=$mem
     mem=$(($mem_after-$mem_before))
     echo "memory usage: $mem"
-    cd ../$REMOTE
+    cd ../$REPO_PATH/$SUB_NAME
     git reset --hard -q HEAD~2
     cd ../..
-    #rm -rf performance_testing
+    rm -rf performance_testing
 }
 
 while getopts ":hn:a" option; do