$ git clone -n https://src.fedoraproject.org/rpms/sphinx.git /var/lib/mock/f41-build-1222405-22756/root/chroot_tmpdir/scmroot/sphinx
Cloning into '/var/lib/mock/f41-build-1222405-22756/root/chroot_tmpdir/scmroot/sphinx'...
$ git fetch origin 0654578e36ffb215d341c880790757828aee1d48:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sphinx
 * [new ref]         0654578e36ffb215d341c880790757828aee1d48 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0654578 Eliminate use of obsolete %patchN syntax (#2283636)