$ git clone -n https://src.fedoraproject.org/rpms/fex.git /var/lib/mock/f31-build-66674-29917/root/chroot_tmpdir/scmroot/fex
Cloning into '/var/lib/mock/f31-build-66674-29917/root/chroot_tmpdir/scmroot/fex'...
$ git reset --hard 8b21ef5f8e466560391da3ebfdd9fac1c23b74ab
HEAD is now at 8b21ef5 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild