$ git clone -n https://gitee.com/src-opencloudos-rpms/gcc.git /var/lib/mock/dist-oc9-build-245298-83286/root/chroot_tmpdir/scmroot/gcc
Cloning into '/var/lib/mock/dist-oc9-build-245298-83286/root/chroot_tmpdir/scmroot/gcc'...
$ git fetch origin 2e5d90f9bf04b5632c6669e39c1b2ac98ac34d0a:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/gcc
 * [new ref]         2e5d90f9bf04b5632c6669e39c1b2ac98ac34d0a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2e5d90f import gcc-12.3.1.8-6.tl4