$ git clone -n https://src.fedoraproject.org/rpms/ghc-yesod-static.git /var/lib/mock/f41-build-840801-160954/root/chroot_tmpdir/scmroot/ghc-yesod-static
Cloning into '/var/lib/mock/f41-build-840801-160954/root/chroot_tmpdir/scmroot/ghc-yesod-static'...
$ git fetch origin 3a0a23b5417fe3ed70a663b55b1d9d82042b57e2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-yesod-static
 * [new ref]         3a0a23b5417fe3ed70a663b55b1d9d82042b57e2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3a0a23b bump release