$ git clone -n https://src.fedoraproject.org/rpms/ghc-bitarray.git /var/lib/mock/f38-build-side-42-init-devel-904324-28620/root/chroot_tmpdir/scmroot/ghc-bitarray
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-904324-28620/root/chroot_tmpdir/scmroot/ghc-bitarray'...
$ git fetch origin 1bfde1548ddccda4d49222615f149ac8d2f3580f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-bitarray
 * [new ref]         1bfde1548ddccda4d49222615f149ac8d2f3580f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1bfde15 Convert to %autorelease and %autochangelog