diff --git a/evergreen/functions/version_expansions_generate.sh b/evergreen/functions/version_expansions_generate.sh
index 6500112398e..bfa38e18f42 100755
--- a/evergreen/functions/version_expansions_generate.sh
+++ b/evergreen/functions/version_expansions_generate.sh
@@ -25,10 +25,10 @@ if [ "${is_patch}" = "true" ]; then
     MONGO_VERSION="$MONGO_VERSION-patch-${version_id}"
 fi
 
-# For commit builds, append the last 8 characters of the git revision to the version string.
+# For commit builds, append the first 8 characters of the git revision to the version string.
 if [[ "${requester}" == "commit" ]]; then
     GIT_REV=$(git rev-parse HEAD)
-    MONGO_VERSION="${MONGO_VERSION}-${GIT_REV: -8}"
+    MONGO_VERSION="${MONGO_VERSION}-${GIT_REV:0:8}"
 fi
 
 # Forcefully override the version for purposes of testing against a different version than the
diff --git a/evergreen/generate_evergreen_bazelrc.sh b/evergreen/generate_evergreen_bazelrc.sh
index 9ffb1d6ac8b..9183f40a217 100644
--- a/evergreen/generate_evergreen_bazelrc.sh
+++ b/evergreen/generate_evergreen_bazelrc.sh
@@ -41,7 +41,7 @@ if [[ "${requester}" == "commit" ]]; then
         echo "Unable to extract MONGO_VERSION from .bazelrc.target_mongo_version" >&2
         exit 1
     fi
-    echo "common --define MONGO_VERSION=${mongo_version}-${GIT_REV: -8}" >>.bazelrc.git
+    echo "common --define MONGO_VERSION=${mongo_version}-${GIT_REV:0:8}" >>.bazelrc.git
 fi
 
 if [[ "${evergreen_remote_exec}" != "on" ]]; then
diff --git a/evergreen/papertrail_generate_expansions.sh b/evergreen/papertrail_generate_expansions.sh
index 33a4121c428..2707657f51e 100755
--- a/evergreen/papertrail_generate_expansions.sh
+++ b/evergreen/papertrail_generate_expansions.sh
@@ -11,10 +11,10 @@ if [[ -z "${target_mongo_version}" ]]; then
 fi
 version="r${target_mongo_version}"
 
-# For commit builds, append the last 8 characters of the git revision to the version string.
+# For commit builds, append the first 8 characters of the git revision to the version string.
 if [[ "${requester:-}" == "commit" ]]; then
     GIT_REV=$(git rev-parse HEAD)
-    version="${version}-${GIT_REV: -8}"
+    version="${version}-${GIT_REV:0:8}"
 fi
 
 if [ ${IS_RELEASE} = 'true' ]; then