$ git clone -n https://src.fedoraproject.org/rpms/hedgewars.git /var/lib/mock/f41-build-2442833-25478/root/chroot_tmpdir/scmroot/hedgewars
Cloning into '/var/lib/mock/f41-build-2442833-25478/root/chroot_tmpdir/scmroot/hedgewars'...
$ git fetch origin 643dcdb412a42ef5ec1d133a5d187ef70e584b44:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/hedgewars
 * [new ref]         643dcdb412a42ef5ec1d133a5d187ef70e584b44 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 643dcdb fix haskell build with mtl 2.3