$ git clone -n https://src.fedoraproject.org/rpms/ghc-warp-tls.git /var/lib/mock/f39-build-1716616-41229/root/chroot_tmpdir/scmroot/ghc-warp-tls
Cloning into '/var/lib/mock/f39-build-1716616-41229/root/chroot_tmpdir/scmroot/ghc-warp-tls'...
$ git fetch origin eedaffc6965fa39771badef729b04e5fc7b40429:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-warp-tls
 * [new ref]         eedaffc6965fa39771badef729b04e5fc7b40429 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eedaffc https://hackage.haskell.org/package/warp-tls-3.3.6/changelog