$ git clone -n https://src.fedoraproject.org/rpms/ghc-attoparsec-binary.git /var/lib/mock/f38-build-side-42-init-devel-819266-28339/root/chroot_tmpdir/scmroot/ghc-attoparsec-binary
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-819266-28339/root/chroot_tmpdir/scmroot/ghc-attoparsec-binary'...
$ git fetch origin 2573d413f25657ffa80b848c66b57731713a55b5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-attoparsec-binary
 * [new ref]         2573d413f25657ffa80b848c66b57731713a55b5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2573d41 Convert to %autorelease and %autochangelog