$ git clone -n https://src.fedoraproject.org/rpms/ddnet.git /var/lib/mock/f40-build-1167277-21667/root/chroot_tmpdir/scmroot/ddnet
Cloning into '/var/lib/mock/f40-build-1167277-21667/root/chroot_tmpdir/scmroot/ddnet'...
$ git fetch origin e3f33e08ee8baabb3b318c531ade2fcda9dd7b56:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ddnet
 * [new ref]         e3f33e08ee8baabb3b318c531ade2fcda9dd7b56 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e3f33e0 Fix build