$ git clone -n https://src.fedoraproject.org/rpms/ghc-data-memocombinators.git /var/lib/mock/f38-build-side-42-init-devel-749886-27661/root/chroot_tmpdir/scmroot/ghc-data-memocombinators
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-749886-27661/root/chroot_tmpdir/scmroot/ghc-data-memocombinators'...
$ git fetch origin 65a11b5cf520c50d15e5eb204026ff644347589c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-data-memocombinators
 * [new ref]         65a11b5cf520c50d15e5eb204026ff644347589c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 65a11b5 Convert to %autorelease and %autochangelog