$ git clone -n https://src.fedoraproject.org/rpms/ghc-disk-free-space.git /var/lib/mock/f45-build-10209-414/root/chroot_tmpdir/scmroot/ghc-disk-free-space
Cloning into '/var/lib/mock/f45-build-10209-414/root/chroot_tmpdir/scmroot/ghc-disk-free-space'...
$ git fetch origin 207a2ae324efb961366b6a98391a7ff824713841:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-disk-free-space
 * [new ref]         207a2ae324efb961366b6a98391a7ff824713841 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 207a2ae Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild