$ git clone -n https://gitee.com/src-opencloudos-rpms/gcc.git /var/lib/mock/dist-oc8-build-123991-73589/root/chroot_tmpdir/scmroot/gcc
Cloning into '/var/lib/mock/dist-oc8-build-123991-73589/root/chroot_tmpdir/scmroot/gcc'...
$ git fetch origin e1578f19f90d5fa8a0e8750a525ad144f05f8097:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/gcc
 * [new ref]         e1578f19f90d5fa8a0e8750a525ad144f05f8097 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e1578f1 Version Rollback to 8.5.0-23.1