$ git clone -n https://src.fedoraproject.org/rpms/perl-Text-Kakasi.git /var/lib/mock/f45-build-27033-620/root/chroot_tmpdir/scmroot/perl-Text-Kakasi
Cloning into '/var/lib/mock/f45-build-27033-620/root/chroot_tmpdir/scmroot/perl-Text-Kakasi'...
$ git fetch origin 6f084f795a248c920d87bf5ecf10e1067f822dcc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Text-Kakasi
 * [new ref]         6f084f795a248c920d87bf5ecf10e1067f822dcc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6f084f7 Perl 5.44 rebuild