$ git clone -n https://src.fedoraproject.org/rpms/ghc-enclosed-exceptions.git /var/lib/mock/f45-build-10235-414/root/chroot_tmpdir/scmroot/ghc-enclosed-exceptions
Cloning into '/var/lib/mock/f45-build-10235-414/root/chroot_tmpdir/scmroot/ghc-enclosed-exceptions'...
$ git fetch origin 19a50ebd83f9ed033dfcdebc426ebab8caf86204:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-enclosed-exceptions
 * [new ref]         19a50ebd83f9ed033dfcdebc426ebab8caf86204 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 19a50eb Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild