$ git clone -n https://src.fedoraproject.org/rpms/kontrast.git /var/lib/mock/f38-build-side-42-init-devel-1411800-31434/root/chroot_tmpdir/scmroot/kontrast
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1411800-31434/root/chroot_tmpdir/scmroot/kontrast'...
$ git fetch origin 0e6cba8f6fba210fdbdbf738cf8d8c975fcc3fe0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kontrast
 * [new ref]         0e6cba8f6fba210fdbdbf738cf8d8c975fcc3fe0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0e6cba8 Added the README