diff --git a/build_rpm.sh b/build_rpm.sh
index b9888aa4..6c8ad24b 100755
--- a/build_rpm.sh
+++ b/build_rpm.sh
@@ -1,13 +1,21 @@
 #!/bin/bash
 set -euxo pipefail
 
+FEDORA_RELEASE=39
+SPEC=/src/golang-github-redhatcloudx-otel-builder.spec
+
+# Set up packages.
 echo "fastestmirror=1" >>/etc/dnf/dnf.conf
 echo "max_parallel_downloads=20" >>/etc/dnf/dnf.conf
 dnf -qy install git mock rpm-build rpmdevtools
 
-FEDORA_RELEASE=39
-SPEC=/src/*.spec
+# Set the right commit SHA in the spec file.
+pushd /src
+CURRENT_COMMIT=$(git rev-parse HEAD)
+sed -i "s/CURRENT_COMMIT_GOES_HERE/${CURRENT_COMMIT}/" $SPEC
+popd
 
+# Build the RPM.
 rpmdev-spectool -R -g $SPEC
 rpmbuild -bs $SPEC | tee /tmp/srpm-name.txt
 SRPM_NAME=$(grep Wrote /tmp/srpm-name.txt | awk '{print $2}')
diff --git a/golang-github-redhatcloudx-otel-builder.spec b/golang-github-redhatcloudx-otel-builder.spec
index 61977d6f..239ac570 100644
--- a/golang-github-redhatcloudx-otel-builder.spec
+++ b/golang-github-redhatcloudx-otel-builder.spec
@@ -3,7 +3,7 @@
 
 # https://github.com/redhatcloudx/ocb-test
 %global goipath         github.com/redhatcloudx/otel-builder
-%global commit          main
+%global commit          CURRENT_COMMIT_GOES_HERE
 
 %gometa -f