$ git clone -n https://src.fedoraproject.org/rpms/perl-MIME-Base64.git /var/lib/mock/f31-build-66732-29928/root/thebuilddir/tmp/scmroot/perl-MIME-Base64
Cloning into '/var/lib/mock/f31-build-66732-29928/root/thebuilddir/tmp/scmroot/perl-MIME-Base64'...
$ git reset --hard 549bb91411f1530526068675a8202be0746abe78
HEAD is now at 549bb91 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild