$ git clone -n https://src.fedoraproject.org/rpms/rubygem-pg.git /var/lib/mock/f31-build-93728-32431/root/chroot_tmpdir/scmroot/rubygem-pg
Cloning into '/var/lib/mock/f31-build-93728-32431/root/chroot_tmpdir/scmroot/rubygem-pg'...
$ git reset --hard 975c9082e0fee39df71e4e6a185332fd903a73b7
HEAD is now at 975c908 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild