diff --git a/.ci/Jenkinsfile b/.ci/Jenkinsfile
index 53504ef50..492f19875 100644
--- a/.ci/Jenkinsfile
+++ b/.ci/Jenkinsfile
@@ -96,7 +96,7 @@ def gitClone(repository, branch) {
 		if (env.GIT_COMMIT == null) {
 			/* Save the current HEAD commit. */
 			env.GIT_COMMIT = scmVars.GIT_COMMIT
-		} else {
+		} else if (env.GIT_COMMIT != scmVars.GIT_COMMIT) {
 			/* Checkout the commit read from the polling log. */
 			if (isUnix())
 				sh "git checkout ${env.GIT_COMMIT} || exit 0"
diff --git a/.ci/build.sh b/.ci/build.sh
index 690565a56..1fde37f68 100644
--- a/.ci/build.sh
+++ b/.ci/build.sh
@@ -297,6 +297,7 @@ esac
 
 # Add git hash and copyright year.
 git_hash=$(git rev-parse --short HEAD 2> /dev/null)
+[ -z "$git_hash" ] && git_hash=$(echo $GIT_COMMIT | cut -c 1-8)
 [ ! -z "$git_hash" ] && cmake_flags_extra="$cmake_flags_extra -D \"EMU_GIT_HASH=$git_hash\""
 cmake_flags_extra="$cmake_flags_extra -D \"EMU_COPYRIGHT_YEAR=$(date +%Y)\""