Github: unshallow on decontamination (#2521)

* Github: unshallow on decontamination
* Github: fix syntax
* Github: decontaminate without full tree
* Github: update decontaminate action in all workflows

.github/workflows/build.yml

@@ -21,7 +21,12 @@ jobs:
       - name: 'Decontaminate previous build leftovers'
         run: |
           if [ -d .git ]; then
-            git submodule status || git checkout "$(git rev-list --max-parents=0 HEAD | tail -n 1)"
+            git submodule status || (
+              git ls-files --stage | egrep '^160000' | awk '{print $4}' | while read submodule
+              do
+                git rm -rf --cached "$submodule"
+              done
+            )
           fi
 
       - name: 'Checkout code'

.github/workflows/lint_and_submodule_check.yml

@@ -21,7 +21,12 @@ jobs:
       - name: 'Decontaminate previous build leftovers'
         run: |
           if [ -d .git ]; then
-            git submodule status || git checkout "$(git rev-list --max-parents=0 HEAD | tail -n 1)"
+            git submodule status || (
+              git ls-files --stage | egrep '^160000' | awk '{print $4}' | while read submodule
+              do
+                git rm -rf --cached "$submodule"
+              done
+            )
           fi
 
       - name: 'Checkout code'

.github/workflows/merge_report.yml

@@ -15,7 +15,12 @@ jobs:
       - name: 'Decontaminate previous build leftovers'
         run: |
           if [ -d .git ]; then
-            git submodule status || git checkout "$(git rev-list --max-parents=0 HEAD | tail -n 1)"
+            git submodule status || (
+              git ls-files --stage | egrep '^160000' | awk '{print $4}' | while read submodule
+              do
+                git rm -rf --cached "$submodule"
+              done
+            )
           fi
 
       - name: 'Checkout code'

.github/workflows/pvs_studio.yml

@@ -22,7 +22,12 @@ jobs:
       - name: 'Decontaminate previous build leftovers'
         run: |
           if [ -d .git ]; then
-            git submodule status || git checkout "$(git rev-list --max-parents=0 HEAD | tail -n 1)"
+            git submodule status || (
+              git ls-files --stage | egrep '^160000' | awk '{print $4}' | while read submodule
+              do
+                git rm -rf --cached "$submodule"
+              done
+            )
           fi
 
       - name: 'Checkout code'

.github/workflows/unit_tests.yml

@@ -15,7 +15,12 @@ jobs:
       - name: 'Decontaminate previous build leftovers'
         run: |
           if [ -d .git ]; then
-            git submodule status || git checkout "$(git rev-list --max-parents=0 HEAD | tail -n 1)"
+            git submodule status || (
+              git ls-files --stage | egrep '^160000' | awk '{print $4}' | while read submodule
+              do
+                git rm -rf --cached "$submodule"
+              done
+            )
           fi
 
       - name: Checkout code

.github/workflows/updater_test.yml

@@ -15,7 +15,12 @@ jobs:
       - name: 'Decontaminate previous build leftovers'
         run: |
           if [ -d .git ]; then
-            git submodule status || git checkout "$(git rev-list --max-parents=0 HEAD | tail -n 1)"
+            git submodule status || (
+              git ls-files --stage | egrep '^160000' | awk '{print $4}' | while read submodule
+              do
+                git rm -rf --cached "$submodule"
+              done
+            )
           fi
 
       - name: Checkout code