$ git clone -n https://src.fedoraproject.org/rpms/arpage.git /var/lib/mock/f41-build-830290-14801/root/chroot_tmpdir/scmroot/arpage
Cloning into '/var/lib/mock/f41-build-830290-14801/root/chroot_tmpdir/scmroot/arpage'...
$ git fetch origin b38fad3592013d6684c5fec12960fa9d8844544c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/arpage
 * [new ref]         b38fad3592013d6684c5fec12960fa9d8844544c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b38fad3 Eliminate use of obsolete %patchN syntax (#2283636)