$ git clone -n https://src.fedoraproject.org/rpms/perl-Kwiki-UserName.git /var/lib/mock/f41-build-1053418-19286/root/chroot_tmpdir/scmroot/perl-Kwiki-UserName
Cloning into '/var/lib/mock/f41-build-1053418-19286/root/chroot_tmpdir/scmroot/perl-Kwiki-UserName'...
$ git fetch origin d0e53323332c0f42d44d7c582b9b0ce966aab383:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Kwiki-UserName
 * [new ref]         d0e53323332c0f42d44d7c582b9b0ce966aab383 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d0e5332 Eliminate use of obsolete %patchN syntax (#2283636)