$ git clone -n https://src.fedoraproject.org/rpms/ghc-wai.git /var/lib/mock/f39-build-2167987-50999/root/chroot_tmpdir/scmroot/ghc-wai
Cloning into '/var/lib/mock/f39-build-2167987-50999/root/chroot_tmpdir/scmroot/ghc-wai'...
$ git fetch origin 7f3e269cd85dd949746822f81c027fa4ae23982d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-wai
 * [new ref]         7f3e269cd85dd949746822f81c027fa4ae23982d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7f3e269 bump release