$ git clone -n https://src.fedoraproject.org/rpms/gtkmm2.4.git /var/lib/mock/f40-build-751466-116202/root/chroot_tmpdir/scmroot/gtkmm2.4
Cloning into '/var/lib/mock/f40-build-751466-116202/root/chroot_tmpdir/scmroot/gtkmm2.4'...
$ git reset --hard 64269c61ac0b299b8221ef5cb5d04263d138a94c
HEAD is now at 64269c6 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild