$ git clone -n https://src.fedoraproject.org/rpms/dd2.git /var/lib/mock/f41-build-1034617-18640/root/chroot_tmpdir/scmroot/dd2
Cloning into '/var/lib/mock/f41-build-1034617-18640/root/chroot_tmpdir/scmroot/dd2'...
$ git fetch origin 418bf2f34cda82be0bd021b10bfd5088e80e7b5d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dd2
 * [new ref]         418bf2f34cda82be0bd021b10bfd5088e80e7b5d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 418bf2f Eliminate use of obsolete %patchN syntax (#2283636)