$ git clone -n https://src.fedoraproject.org/rpms/perl-Flickr-Upload.git /var/lib/mock/f41-build-714917-13069/root/chroot_tmpdir/scmroot/perl-Flickr-Upload
Cloning into '/var/lib/mock/f41-build-714917-13069/root/chroot_tmpdir/scmroot/perl-Flickr-Upload'...
$ git fetch origin a244ffe85dad224569fe417cc80a5acbbee07e53:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Flickr-Upload
 * [new ref]         a244ffe85dad224569fe417cc80a5acbbee07e53 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a244ffe Eliminate use of obsolete %patchN syntax (#2283636)