$ git clone -n https://src.fedoraproject.org/rpms/perl-Sys-Mmap.git /var/lib/mock/f31-build-45801-26400/root/chroot_tmpdir/scmroot/perl-Sys-Mmap
Cloning into '/var/lib/mock/f31-build-45801-26400/root/chroot_tmpdir/scmroot/perl-Sys-Mmap'...
$ git reset --hard 8d764a8589fb60997c15d811798d24505199a496
HEAD is now at 8d764a8 Perl 5.30 rebuild