$ git clone -n https://src.fedoraproject.org/rpms/glibmm24.git /var/lib/mock/f31-build-63455-29363/root/chroot_tmpdir/scmroot/glibmm24
Cloning into '/var/lib/mock/f31-build-63455-29363/root/chroot_tmpdir/scmroot/glibmm24'...
$ git reset --hard 05a816d0e8a85331c2e3d4f2cceb2a587efdfd78
HEAD is now at 05a816d - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild