$ git clone -n https://gitee.com/opencloudos-stream/gcc.git /var/lib/mock/dist-ocs23-rebuild-test-0-build-320046-33678/root/chroot_tmpdir/scmroot/gcc
Cloning into '/var/lib/mock/dist-ocs23-rebuild-test-0-build-320046-33678/root/chroot_tmpdir/scmroot/gcc'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/gcc
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6772a44 !21 updated to upstream version 12.3.1.5 Merge pull request !21 from jeremiazhao/master