$ git clone -n https://gitee.com/opencloudos-stream/libsigcplusplus20.git /var/lib/mock/dist-ocs23-build-63895-2798/root/chroot_tmpdir/scmroot/libsigcplusplus20
Cloning into '/var/lib/mock/dist-ocs23-build-63895-2798/root/chroot_tmpdir/scmroot/libsigcplusplus20'...
$ git fetch origin HEAD:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/libsigcplusplus20
 * [new ref]         HEAD       -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f12dc76 Rebuilt for OpenCloudOS Stream 23.09