$ git clone -n https://src.fedoraproject.org/rpms/openjdk-asmtools.git /var/lib/mock/f38-build-side-42-init-devel-723388-27298/root/chroot_tmpdir/scmroot/openjdk-asmtools
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-723388-27298/root/chroot_tmpdir/scmroot/openjdk-asmtools'...
$ git fetch origin 6306df98078c750c5807e1337750aa4df96b98c4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/openjdk-asmtools
 * [new ref]         6306df98078c750c5807e1337750aa4df96b98c4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6306df9 Added junit