$ git clone -n https://src.fedoraproject.org/rpms/perl-PerlIO-buffersize.git /var/lib/mock/f31-build-44242-25962/root/thebuilddir/tmp/scmroot/perl-PerlIO-buffersize
Cloning into '/var/lib/mock/f31-build-44242-25962/root/thebuilddir/tmp/scmroot/perl-PerlIO-buffersize'...
$ git reset --hard 9d91621d163bb1d5210f85db12be65d3f85296f1
HEAD is now at 9d91621 Perl 5.30 rebuild