$ git clone -n https://src.fedoraproject.org/rpms/gcx.git /var/lib/mock/f31-build-53350-27840/root/chroot_tmpdir/scmroot/gcx
Cloning into '/var/lib/mock/f31-build-53350-27840/root/chroot_tmpdir/scmroot/gcx'...
$ git reset --hard caca97029e28280fd8ed7751b22fd2429393861e
HEAD is now at caca970 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild