$ git clone -n https://src.fedoraproject.org/rpms/openbox.git /var/lib/mock/f41-build-1037913-18820/root/chroot_tmpdir/scmroot/openbox
Cloning into '/var/lib/mock/f41-build-1037913-18820/root/chroot_tmpdir/scmroot/openbox'...
$ git fetch origin ec4f1c94fae7ea1ccb2cc8046c42a0f4c487ca4b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/openbox
 * [new ref]         ec4f1c94fae7ea1ccb2cc8046c42a0f4c487ca4b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ec4f1c9 Eliminate use of obsolete %patchN syntax (#2283636)