$ git clone -n https://src.fedoraproject.org/rpms/perl-Bit-Vector.git /var/lib/mock/f31-build-44660-26250/root/thebuilddir/tmp/scmroot/perl-Bit-Vector
Cloning into '/var/lib/mock/f31-build-44660-26250/root/thebuilddir/tmp/scmroot/perl-Bit-Vector'...
$ git reset --hard e2b2e3e6e7a91ec058b0cd6a2fb5fd937393bb04
HEAD is now at e2b2e3e Perl 5.30 rebuild