$ git clone -n https://src.fedoraproject.org/rpms/ghc-utf8-light.git /var/lib/mock/f45-build-10952-425/root/chroot_tmpdir/scmroot/ghc-utf8-light
Cloning into '/var/lib/mock/f45-build-10952-425/root/chroot_tmpdir/scmroot/ghc-utf8-light'...
$ git fetch origin a0723c9464521675a88f6c69c6103561db8fd7ff:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-utf8-light
 * [new ref]         a0723c9464521675a88f6c69c6103561db8fd7ff -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a0723c9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild