Make branch name work as well

Author: mathbunnyru

.github/actions/cmake/action.yml

@@ -59,6 +59,7 @@ runs:
         PACKAGE: "${{ inputs.package == 'true' && 'ON' || 'OFF' }}"
         # GitHub creates merge commits for pull requests, so we need to use `github.event.pull_request.head.sha`
         # to get the actual commit SHA of the PR branch.
+        GITHUB_REF_NAME: "${{ github.ref_name }}"
         GITHUB_HEAD_SHA: "${{ github.event.pull_request.head.sha || github.sha }}"
       run: |
         cmake \

cmake/ClioVersion.cmake

@@ -24,17 +24,17 @@ else ()
     OUTPUT_STRIP_TRAILING_WHITESPACE COMMAND_ERROR_IS_FATAL ANY
   )
 
-  set(GIT_COMMAND branch --show-current)
-  execute_process(
-    COMMAND ${GIT_EXECUTABLE} ${GIT_COMMAND} WORKING_DIRECTORY ${CMAKE_SOURCE_DIR} OUTPUT_VARIABLE BRANCH
-    OUTPUT_STRIP_TRAILING_WHITESPACE COMMAND_ERROR_IS_FATAL ANY
-  )
-
-  if (DEFINED ENV{GITHUB_HEAD_SHA})
-    # GitHub creates merge commits for pull requests, so we need to use `github.event.pull_request.head.sha` to get the
-    # actual commit SHA of the PR branch. We set $GITHUB_HEAD_SHA in the cmake action
+  if (DEFINED ENV{GITHUB_CI})
+    # GitHub in PR doesn't: - keep branch name - run from commit pushed to branch
+    set(BRANCH $ENV{GITHUB_REF_NAME})
     set(REV $ENV{GITHUB_HEAD_SHA})
   else ()
+    set(GIT_COMMAND branch --show-current)
+    execute_process(
+      COMMAND ${GIT_EXECUTABLE} ${GIT_COMMAND} WORKING_DIRECTORY ${CMAKE_SOURCE_DIR} OUTPUT_VARIABLE BRANCH
+      OUTPUT_STRIP_TRAILING_WHITESPACE COMMAND_ERROR_IS_FATAL ANY
+    )
+
     set(GIT_COMMAND rev-parse --short HEAD)
     execute_process(
       COMMAND ${GIT_EXECUTABLE} ${GIT_COMMAND} WORKING_DIRECTORY ${CMAKE_SOURCE_DIR} OUTPUT_VARIABLE REV