$ git clone -n https://gitee.com/opencloudos-stream/gc.git /var/lib/mock/dist-ocs23-base-build-269962-25836/root/chroot_tmpdir/scmroot/gc
Cloning into '/var/lib/mock/dist-ocs23-base-build-269962-25836/root/chroot_tmpdir/scmroot/gc'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/gc
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at be7b749 Rebuilt for loongarch release