$ git clone -n https://src.fedoraproject.org/rpms/ghc-HUnit.git /var/lib/mock/f45-build-9880-411/root/chroot_tmpdir/scmroot/ghc-HUnit
Cloning into '/var/lib/mock/f45-build-9880-411/root/chroot_tmpdir/scmroot/ghc-HUnit'...
$ git fetch origin 6b624f7bf64dc587bd6c2e7b866eaa8f4dd6bb35:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-HUnit
 * [new ref]         6b624f7bf64dc587bd6c2e7b866eaa8f4dd6bb35 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6b624f7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild