$ git clone -n https://gitee.com/src-opencloudos-rpms/gcc.git /var/lib/mock/dist-oc9-la64-build-126001-75587/root/chroot_tmpdir/scmroot/gcc
Cloning into '/var/lib/mock/dist-oc9-la64-build-126001-75587/root/chroot_tmpdir/scmroot/gcc'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/gcc
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dabb35e import gcc-12.3.1.4-2.tl4