$ git clone -n https://src.fedoraproject.org/rpms/perl-Perlbal-XS-HTTPHeaders.git /var/lib/mock/f29-build-5318-1270/root/thebuilddir/tmp/scmroot/perl-Perlbal-XS-HTTPHeaders
Cloning into '/var/lib/mock/f29-build-5318-1270/root/thebuilddir/tmp/scmroot/perl-Perlbal-XS-HTTPHeaders'...
$ git reset --hard 7eae1c843f44d68c32803ded5510cd3fdf3be84d
HEAD is now at 7eae1c8 - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild