$ git clone -n https://src.fedoraproject.org/rpms/ghc9.4.git /var/lib/mock/f38-build-side-42-init-devel-1348649-30697/root/chroot_tmpdir/scmroot/ghc9.4
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1348649-30697/root/chroot_tmpdir/scmroot/ghc9.4'...
$ git fetch origin ef821a056809c3795ff21bf8454ff9edb397f4ba:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc9.4
 * [new ref]         ef821a056809c3795ff21bf8454ff9edb397f4ba -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ef821a0 limit hadrian builds to 64 cpus!