$ git clone -n https://src.fedoraproject.org/rpms/ghc-wreq.git /var/lib/mock/f40-build-770241-125827/root/chroot_tmpdir/scmroot/ghc-wreq
Cloning into '/var/lib/mock/f40-build-770241-125827/root/chroot_tmpdir/scmroot/ghc-wreq'...
$ git fetch origin d8341c7e5b346be5af0f2f824dda8c3467265599:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-wreq
 * [new ref]         d8341c7e5b346be5af0f2f824dda8c3467265599 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d8341c7 https://hackage.haskell.org/package/wreq-0.5.4.0/changelog