$ git clone -n https://src.fedoraproject.org/rpms/m4.git /var/lib/mock/f31-build-49652-27328/root/chroot_tmpdir/scmroot/m4
Cloning into '/var/lib/mock/f31-build-49652-27328/root/chroot_tmpdir/scmroot/m4'...
$ git reset --hard 63cb1b0db9b0eb4fdf8c306e47f1c4f05b9252cc
HEAD is now at 63cb1b0 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild