$ git clone -n https://src.fedoraproject.org/forks/hypersa/rpms/ghc-connection.git /var/lib/mock/f39-build-2208848-52146/root/chroot_tmpdir/scmroot/ghc-connection
Cloning into '/var/lib/mock/f39-build-2208848-52146/root/chroot_tmpdir/scmroot/ghc-connection'...
$ git fetch origin ccbc37b01dbbaf149048e52a0cf4f3281610b59f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/forks/hypersa/rpms/ghc-connection
 * [new ref]         ccbc37b01dbbaf149048e52a0cf4f3281610b59f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ccbc37b rv64 rebuild