$ git clone -n https://src.fedoraproject.org/rpms/mpg123.git /var/lib/mock/f31-build-56657-28239/root/chroot_tmpdir/scmroot/mpg123
Cloning into '/var/lib/mock/f31-build-56657-28239/root/chroot_tmpdir/scmroot/mpg123'...
$ git reset --hard 5756a4e8bcf072ffa8d0cc3f46f1a7b8ef81cdca
HEAD is now at 5756a4e - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild