$ git clone -n https://src.fedoraproject.org/rpms/kf6-kconfig.git /var/lib/mock/f42-build-side-1-3497622-45961/root/chroot_tmpdir/scmroot/kf6-kconfig
Cloning into '/var/lib/mock/f42-build-side-1-3497622-45961/root/chroot_tmpdir/scmroot/kf6-kconfig'...
$ git fetch origin d6332b84bdc0ccb84c68ee2e127960f6d5767a56:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kconfig
 * [new ref]         d6332b84bdc0ccb84c68ee2e127960f6d5767a56 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d6332b8 6.13.0