$ git clone -n https://src.fedoraproject.org/rpms/ghc-skein.git /var/lib/mock/f41-build-839341-160118/root/chroot_tmpdir/scmroot/ghc-skein
Cloning into '/var/lib/mock/f41-build-839341-160118/root/chroot_tmpdir/scmroot/ghc-skein'...
$ git fetch origin 3c1f563205a0a3516723664e5bb77121162676da:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-skein
 * [new ref]         3c1f563205a0a3516723664e5bb77121162676da -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3c1f563 bump release