$ git clone -n https://src.fedoraproject.org/rpms/ghc-unliftio.git /var/lib/mock/f38-build-side-42-init-devel-922228-28737/root/chroot_tmpdir/scmroot/ghc-unliftio
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-922228-28737/root/chroot_tmpdir/scmroot/ghc-unliftio'...
$ git fetch origin 3a15ba248f90389b95c9428e9bc7c0abe3db6948:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-unliftio
 * [new ref]         3a15ba248f90389b95c9428e9bc7c0abe3db6948 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3a15ba2 Convert to %autorelease and %autochangelog