$ git clone -n https://gitee.com/opencloudos-stream/petsc.git /var/lib/mock/dist-ocs23-build-18931-1041/root/chroot_tmpdir/scmroot/petsc
Cloning into '/var/lib/mock/dist-ocs23-build-18931-1041/root/chroot_tmpdir/scmroot/petsc'...
$ git fetch origin HEAD:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/petsc
 * [new ref]                    -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 745e201 OCS package init