$ git clone -n https://src.fedoraproject.org/rpms/ghc-dataenc.git /var/lib/mock/f45-build-10170-414/root/chroot_tmpdir/scmroot/ghc-dataenc
Cloning into '/var/lib/mock/f45-build-10170-414/root/chroot_tmpdir/scmroot/ghc-dataenc'...
$ git fetch origin bfbd548e6725290012afb46a4d01ba7bbd1b5564:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-dataenc
 * [new ref]         bfbd548e6725290012afb46a4d01ba7bbd1b5564 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bfbd548 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild