$ git clone -n https://gitee.com/bbrucezhang/ungoogled-chromium.git /var/lib/mock/dist-oc9-epol-build-236649-82310/root/chroot_tmpdir/scmroot/ungoogled-chromium
Cloning into '/var/lib/mock/dist-oc9-epol-build-236649-82310/root/chroot_tmpdir/scmroot/ungoogled-chromium'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/bbrucezhang/ungoogled-chromium
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0695682 Refine cleanup process in generate-rust-toolchain-aarch64.sh to remove both .git directories and submodule .git files, ensuring a clean build environment. Update ungoogled-chromium.spec to clarify .git handling for offline builds.