$ git clone -n https://gitee.com/opencloudos-stream/baobab.git /var/lib/mock/dist-ocs23-loongarch64-build-148248-9859/root/chroot_tmpdir/scmroot/baobab
Cloning into '/var/lib/mock/dist-ocs23-loongarch64-build-148248-9859/root/chroot_tmpdir/scmroot/baobab'...
$ git fetch origin HEAD:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/baobab
 * [new ref]         HEAD       -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 28a1692 !2 Replace hardcode to variable for auto-upgrade. Merge pull request !2 from rockerzhu/master