$ git clone -n https://src.fedoraproject.org/rpms/perl-Alien-ROOT.git /var/lib/mock/f31-build-44739-26250/root/thebuilddir/tmp/scmroot/perl-Alien-ROOT
Cloning into '/var/lib/mock/f31-build-44739-26250/root/thebuilddir/tmp/scmroot/perl-Alien-ROOT'...
$ git reset --hard fe01363240651741a5f2ed6dae7cf52f26cb712a
HEAD is now at fe01363 Perl 5.30 rebuild