$ git clone -n https://github.com/xcp-ng-rpms/sudo.git /var/lib/mock/v8.3-u-pcoval2-10574-29128/root/chroot_tmpdir/scmroot/sudo
Cloning into '/var/lib/mock/v8.3-u-pcoval2-10574-29128/root/chroot_tmpdir/scmroot/sudo'...
$ git fetch origin b4036416e204910557d26de8585799379ddc144c:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/sudo
 * [new ref]         b4036416e204910557d26de8585799379ddc144c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b403641 bump release for test build