ci: Minor quoting fixes

ci/build-test-qemu.sh

@@ -1,12 +1,12 @@
 #!/bin/bash
 set -xeuo pipefail
 # This script is the entrypoint for PRs to this repo via OpenShift Prow.
-dn=$(dirname $0)
+dn=$(dirname "${0}")
 # Prow jobs don't support adding emptydir today
 export COSA_SKIP_OVERLAY=1
 # Create a temporary cosa workdir if COSA_DIR is not set.
 cosa_dir="${COSA_DIR:-$(mktemp -d)}"
-echo "Using $cosa_dir for build"
-cd "$cosa_dir"
+echo "Using ${cosa_dir} for build"
+cd "${cosa_dir}"
 cosa init /src
 exec ${dn}/prow-build-test-qemu.sh

ci/prow-build-test-qemu.sh

@@ -35,7 +35,7 @@ prev_build_url=${REDIRECTOR_URL}/rhcos-${ocpver}/
 curl -L http://base-"${ocpver_mut}"-rhel86.ocp.svc.cluster.local > src/config/ocp.repo
 curl -L http://base-"${ocpver_mut}"-rhel85.ocp.svc.cluster.local > src/config/ocp85.repo
 sed -i -e 's,\[rhel-8-,\[rhel-85-,' src/config/ocp85.repo
-cosa buildfetch --url=${prev_build_url}
+cosa buildfetch --url="${prev_build_url}"
 cosa fetch
 cosa build
 cosa buildextend-extensions