get_snapshot: Fix tarball suffix

get_snapshot

@@ -61,7 +61,7 @@ if ! git_version=$(git describe --tags "${UPSTREAM_GIT_BRANCH}"); then
     git_version=0.0.0.$(git rev-list --count "${UPSTREAM_GIT_BRANCH}").$(git rev-parse --short=12 "${UPSTREAM_GIT_BRANCH}")
 fi
 package_version=$(echo "$git_version" | sed -e 's/^v//' -e 's/-/+/' -e 's/-/./g')
-tarball="${workdir}/${PROJECT}_${package_version}.tar"
+tarball="${workdir}/${PROJECT}_${package_version}.orig.tar"
 
 git archive --format=tar --prefix="${PROJECT}_${package_version}/" -o "${tarball}" "${UPSTREAM_GIT_BRANCH}"