Do not store CIRCLE_SHA1 in commit_hash.txt

- It is not necessary, because when missing, our CMake config will fetch it from git.

Author: cameel

.circleci/config.yml

@@ -182,17 +182,16 @@ commands:
   # --------------------------------------------------------------------------
   # Build Commands
 
-  setup_prerelease_commit_hash:
+  setup_prerelease:
     steps:
       - run:
-          name: Store commit hash and prerelease
+          name: Store prerelease suffix
           command: |
             if [[ -n $CIRCLE_TAG ]]; then
               echo -n > prerelease.txt;
             else
               date -u +"nightly.%Y.%-m.%-d" > prerelease.txt;
             fi
-            echo -n "$CIRCLE_SHA1" > commit_hash.txt
 
   install_and_check_minimum_requirements:
     parameters:
@@ -1115,7 +1114,7 @@ jobs:
     <<: *base_ubuntu_clang_large
     steps:
       - checkout
-      - setup_prerelease_commit_hash
+      - setup_prerelease
       - run_build_ossfuzz
       - persist_ossfuzz_executables_to_workspace
       - matrix_notify_failure_unless_pr
@@ -1225,7 +1224,7 @@ jobs:
     <<: *base_ubuntu2404_small
     steps:
       - checkout
-      - setup_prerelease_commit_hash
+      - setup_prerelease
       - run:
           name: Install build system dependencies
           command: |

scripts/ci/build.sh

@@ -18,10 +18,6 @@ else
     TZ=UTC git show --quiet --date="format-local:%Y.%-m.%-d" --format="${prerelease_source}.%cd" > prerelease.txt
 fi
 
-if [[ -n $CIRCLE_SHA1 ]]; then
-    echo -n "$CIRCLE_SHA1" > commit_hash.txt
-fi
-
 mkdir -p build
 cd build
 

scripts/ci/build_emscripten.sh

@@ -53,9 +53,6 @@ function build() {
         # if the CI is triggered just before midnight.
         TZ=UTC git show --quiet --date="format-local:%Y.%-m.%-d" --format="${prerelease_source}.%cd" > prerelease.txt
     fi
-    if [[ -n $CIRCLE_SHA1 ]]; then
-        echo -n "$CIRCLE_SHA1" > commit_hash.txt
-    fi
 
     # Disable warnings for unqualified `move()` calls, introduced and enabled by
     # default in clang-16 which is what the emscripten docker image uses.