$ git clone -n https://src.fedoraproject.org/rpms/kappanhang.git /var/lib/mock/f42-build-59128670-6571252/root/chroot_tmpdir/scmroot/kappanhang
Cloning into '/var/lib/mock/f42-build-59128670-6571252/root/chroot_tmpdir/scmroot/kappanhang'...
$ git fetch origin beb4b8ccba43b794c9e194c92d450745bbb01c12:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kappanhang
 * [new ref]         beb4b8ccba43b794c9e194c92d450745bbb01c12 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at beb4b8c Update to git snapshot dffb773