$ git clone -n https://src.fedoraproject.org/rpms/openrdate.git /var/lib/mock/f41-build-1022692-18093/root/chroot_tmpdir/scmroot/openrdate
Cloning into '/var/lib/mock/f41-build-1022692-18093/root/chroot_tmpdir/scmroot/openrdate'...
$ git fetch origin cca20213f20eb29a08325e3d36977d71999d57a3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/openrdate
 * [new ref]         cca20213f20eb29a08325e3d36977d71999d57a3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cca2021 Eliminate use of obsolete %patchN syntax (#2283636)