$ git clone -n https://src.fedoraproject.org/rpms/gtkmm2.4.git /var/lib/mock/f37-build-side-32-misc-devel-205508-13240/root/chroot_tmpdir/scmroot/gtkmm2.4
Cloning into '/var/lib/mock/f37-build-side-32-misc-devel-205508-13240/root/chroot_tmpdir/scmroot/gtkmm2.4'...
$ git reset --hard 01c55b573b7a3b55520cd21a4daf78a9a5e5267f
HEAD is now at 01c55b5 Minor packaging cleanup