$ git clone -n https://src.fedoraproject.org/rpms/args4j.git /var/lib/mock/f41-build-1232069-22865/root/chroot_tmpdir/scmroot/args4j
Cloning into '/var/lib/mock/f41-build-1232069-22865/root/chroot_tmpdir/scmroot/args4j'...
$ git fetch origin cd74b9a6e7f5c3e1fd4e22cb9491dac0dd1f8a86:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/args4j
 * [new ref]         cd74b9a6e7f5c3e1fd4e22cb9491dac0dd1f8a86 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cd74b9a Eliminate use of obsolete %patchN syntax (#2283636)