$ git clone -n https://gitee.com/opencloudos-stream/cross-gcc /var/lib/mock/dist-ocs23-epol9-build-282109-27139/root/chroot_tmpdir/scmroot/cross-gcc
Cloning into '/var/lib/mock/dist-ocs23-epol9-build-282109-27139/root/chroot_tmpdir/scmroot/cross-gcc'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/cross-gcc
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cebd249 update