$ git clone -n https://src.fedoraproject.org/rpms/ghc-monad-logger.git /var/lib/mock/f39-build-2057758-49131/root/chroot_tmpdir/scmroot/ghc-monad-logger
Cloning into '/var/lib/mock/f39-build-2057758-49131/root/chroot_tmpdir/scmroot/ghc-monad-logger'...
$ git fetch origin ddeaea3400c52c3ba1dd675e7e909f10598e03b0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-monad-logger
 * [new ref]         ddeaea3400c52c3ba1dd675e7e909f10598e03b0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ddeaea3 https://hackage.haskell.org/package/monad-logger-0.3.40/changelog