$ git clone -n https://src.fedoraproject.org/rpms/ghc-http-types.git /var/lib/mock/f41-build-side-1-2908506-34741/root/chroot_tmpdir/scmroot/ghc-http-types
Cloning into '/var/lib/mock/f41-build-side-1-2908506-34741/root/chroot_tmpdir/scmroot/ghc-http-types'...
$ git fetch origin dacd1acd65b3d42f1be0856df08297339eb7f5c8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-http-types
 * [new ref]         dacd1acd65b3d42f1be0856df08297339eb7f5c8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dacd1ac https://hackage.haskell.org/package/http-types-0.12.4/changelog