$ git clone -n https://gitee.com/wency_cn/libnbd_1770927017.git /var/lib/mock/dist-an23-build-514293-75110/root/chroot_tmpdir/scmroot/libnbd_1770927017
Cloning into '/var/lib/mock/dist-an23-build-514293-75110/root/chroot_tmpdir/scmroot/libnbd_1770927017'...
$ git fetch origin 5d37eda0362c38b35cb3cbfe955e56a3230d2e4b:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/libnbd_1770927017
 * [new ref]         5d37eda0362c38b35cb3cbfe955e56a3230d2e4b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5d37eda Update code from upstream