$ git clone -n https://src.fedoraproject.org/rpms/ghc-email-validate.git /var/lib/mock/f45-build-10237-414/root/chroot_tmpdir/scmroot/ghc-email-validate
Cloning into '/var/lib/mock/f45-build-10237-414/root/chroot_tmpdir/scmroot/ghc-email-validate'...
$ git fetch origin 2d7570948e2444380f8f7b6d435e74090008da90:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-email-validate
 * [new ref]         2d7570948e2444380f8f7b6d435e74090008da90 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2d75709 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild