$ git clone -n https://src.fedoraproject.org/rpms/ghc-half.git /var/lib/mock/f45-build-10377-416/root/chroot_tmpdir/scmroot/ghc-half
Cloning into '/var/lib/mock/f45-build-10377-416/root/chroot_tmpdir/scmroot/ghc-half'...
$ git fetch origin aee4428b0736ac5133f5f55b0f6c5f87b961811b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-half
 * [new ref]         aee4428b0736ac5133f5f55b0f6c5f87b961811b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aee4428 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild