Set correct git tag in CI

Author: Macil

.github/workflows/continuous_integration.yml

@@ -73,7 +73,11 @@ jobs:
           wget -q "https://github.com/coelckers/gzdoom/releases/download/ci_deps/${ZMUSIC_PACKAGE}"
           tar -xf "${ZMUSIC_PACKAGE}"
         fi
-    
+
+    - name: Git describe
+      id: ghd
+      uses: proudust/gh-describe@v2
+
     - name: Configure
       shell: bash
       run: |
@@ -82,6 +86,7 @@ jobs:
     - name: Build
       shell: bash
       run: |
+        export GIT_DESCRIBE="${{ steps.ghd.outputs.describe }}"
         export MAKEFLAGS=--keep-going
         cmake --build build --config ${{ matrix.config.build_type }} --parallel 3
 

tools/updaterevision/UpdateRevision.cmake

@@ -15,16 +15,20 @@ endmacro()
 # Populate variables "Hash", "Tag", and "Timestamp" with relevant information
 # from source repository.  If anything goes wrong return something in "Error."
 function(query_repo_info)
-	execute_process(
-		COMMAND git describe --tags --dirty=-m
-		RESULT_VARIABLE Error
-		OUTPUT_VARIABLE Tag
-		ERROR_QUIET
-		OUTPUT_STRIP_TRAILING_WHITESPACE
-	)
-	if(NOT "${Error}" STREQUAL "0")
-		ret_var(Error)
-		return()
+	if(DEFINED ENV{GIT_DESCRIBE})
+		set(Tag "$ENV{GIT_DESCRIBE}")
+	else()
+		execute_process(
+			COMMAND git describe --tags --dirty=-m
+			RESULT_VARIABLE Error
+			OUTPUT_VARIABLE Tag
+			ERROR_QUIET
+			OUTPUT_STRIP_TRAILING_WHITESPACE
+		)
+		if(NOT "${Error}" STREQUAL "0")
+			ret_var(Error)
+			return()
+		endif()
 	endif()
 
 	execute_process(