$ git clone -n https://src.fedoraproject.org/rpms/gtkmm30.git /var/lib/mock/f33-build-122359-38278/root/chroot_tmpdir/scmroot/gtkmm30
Cloning into '/var/lib/mock/f33-build-122359-38278/root/chroot_tmpdir/scmroot/gtkmm30'...
$ git reset --hard 07fc30cc8a469577c33cdbc99593085ae8b11cc5
HEAD is now at 07fc30c - Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass_Rebuild