$ git clone -n https://gitee.com/wenjie2025/libnbd_1772643885.git /var/lib/mock/dist-an23-build-517318-75318/root/chroot_tmpdir/scmroot/libnbd_1772643885
Cloning into '/var/lib/mock/dist-an23-build-517318-75318/root/chroot_tmpdir/scmroot/libnbd_1772643885'...
$ git fetch origin a8d39ac6e90222119b4bc3f96bb3a492b33dea03:KOJI_FETCH_HEAD
From https://gitee.com/wenjie2025/libnbd_1772643885
 * [new ref]         a8d39ac6e90222119b4bc3f96bb3a492b33dea03 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a8d39ac Update code from upstream