$ git clone -n https://src.fedoraproject.org/rpms/python-pyrfc3339.git /var/lib/mock/f41-build-745805-13350/root/chroot_tmpdir/scmroot/python-pyrfc3339
Cloning into '/var/lib/mock/f41-build-745805-13350/root/chroot_tmpdir/scmroot/python-pyrfc3339'...
$ git fetch origin 69bbc22c0f05bb9424d0e501a58f7236ed392c7a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-pyrfc3339
 * [new ref]         69bbc22c0f05bb9424d0e501a58f7236ed392c7a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 69bbc22 Eliminate use of obsolete %patchN syntax (#2283636)