$ git clone -n https://src.fedoraproject.org/rpms/perl-Sereal-Encoder.git /var/lib/mock/f31-build-44919-26250/root/thebuilddir/tmp/scmroot/perl-Sereal-Encoder
Cloning into '/var/lib/mock/f31-build-44919-26250/root/thebuilddir/tmp/scmroot/perl-Sereal-Encoder'...
$ git reset --hard 47bd002809f9e8c81039069a8e8d131e0c0ed904
HEAD is now at 47bd002 Perl 5.30 rebuild