$ git clone -n https://src.fedoraproject.org/rpms/kf6-kconfig.git /var/lib/mock/f42-build-side-1-3582459-46885/root/chroot_tmpdir/scmroot/kf6-kconfig
Cloning into '/var/lib/mock/f42-build-side-1-3582459-46885/root/chroot_tmpdir/scmroot/kf6-kconfig'...
$ git fetch origin 66ce8109976675a87fa6f845d0e7161d85bef429:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kconfig
 * [new ref]         66ce8109976675a87fa6f845d0e7161d85bef429 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 66ce810 6.16.0