$ git clone -n https://src.fedoraproject.org/rpms/c2hs.git /var/lib/mock/f41-build-side-1-2656030-28431/root/chroot_tmpdir/scmroot/c2hs
Cloning into '/var/lib/mock/f41-build-side-1-2656030-28431/root/chroot_tmpdir/scmroot/c2hs'...
$ git fetch origin 56e764d2a218d942375ea035f38da12838d41b67:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/c2hs
 * [new ref]         56e764d2a218d942375ea035f38da12838d41b67 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 56e764d bump release