$ git clone -n https://src.fedoraproject.org/rpms/dateutils.git /var/lib/mock/f39-build-2250865-54073/root/chroot_tmpdir/scmroot/dateutils
Cloning into '/var/lib/mock/f39-build-2250865-54073/root/chroot_tmpdir/scmroot/dateutils'...
$ git fetch origin c4b48b8c784fdccc5a0d2ad059ac1079cc40c2b5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dateutils
 * [new ref]         c4b48b8c784fdccc5a0d2ad059ac1079cc40c2b5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c4b48b8 actually add new patch lolsigh