$ git clone -n https://src.fedoraproject.org/rpms/ghc-http-media.git /var/lib/mock/f41-build-839563-160219/root/chroot_tmpdir/scmroot/ghc-http-media
Cloning into '/var/lib/mock/f41-build-839563-160219/root/chroot_tmpdir/scmroot/ghc-http-media'...
$ git fetch origin f97443ce751d9400fa98c8ae1b9816a8ee412306:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-http-media
 * [new ref]         f97443ce751d9400fa98c8ae1b9816a8ee412306 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f97443c https://hackage.haskell.org/package/http-media-0.8.1.1/changelog