$ git clone -n https://github.com/xcp-ng-rpms/ldns.git /var/lib/mock/v8.3-u-pcoval2-9957-28635/root/chroot_tmpdir/scmroot/ldns
Cloning into '/var/lib/mock/v8.3-u-pcoval2-9957-28635/root/chroot_tmpdir/scmroot/ldns'...
$ git fetch origin 3c0da7515a781f05d7ace6b70a58d1416579a690:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/ldns
 * [new ref]         3c0da7515a781f05d7ace6b70a58d1416579a690 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3c0da75 bump release for test build