$ git clone -n https://src.fedoraproject.org/rpms/perl-rpm-build-perl.git /var/lib/mock/f31-build-44588-26250/root/thebuilddir/tmp/scmroot/perl-rpm-build-perl
Cloning into '/var/lib/mock/f31-build-44588-26250/root/thebuilddir/tmp/scmroot/perl-rpm-build-perl'...
$ git reset --hard 0c021f6a97be286626a7e560e8fb3c51df596ff5
HEAD is now at 0c021f6 Perl 5.30 rebuild