$ git clone -n https://src.fedoraproject.org/rpms/perl-Cache-FastMmap.git /var/lib/mock/f31-build-69240-30293/root/chroot_tmpdir/scmroot/perl-Cache-FastMmap
Cloning into '/var/lib/mock/f31-build-69240-30293/root/chroot_tmpdir/scmroot/perl-Cache-FastMmap'...
$ git reset --hard 5aa7dc03cd9ed6eb87c27efecf9ef18402c2c81b
HEAD is now at 5aa7dc0 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild