$ git clone -n https://src.fedoraproject.org/rpms/ghc-hspec-megaparsec.git /var/lib/mock/f39-build-1961884-43270/root/chroot_tmpdir/scmroot/ghc-hspec-megaparsec
Cloning into '/var/lib/mock/f39-build-1961884-43270/root/chroot_tmpdir/scmroot/ghc-hspec-megaparsec'...
$ git fetch origin 2083f13b8f95acf7451a847af43547eee98cc8e8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-hspec-megaparsec
 * [new ref]         2083f13b8f95acf7451a847af43547eee98cc8e8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2083f13 bump release