$ git clone -n https://src.fedoraproject.org/rpms/kmix.git /var/lib/mock/f40-build-2448350-61405/root/chroot_tmpdir/scmroot/kmix
Cloning into '/var/lib/mock/f40-build-2448350-61405/root/chroot_tmpdir/scmroot/kmix'...
$ git fetch origin 6fed91b8d6c9ccf465056e82f10d8311123587d0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kmix
 * [new ref]         6fed91b8d6c9ccf465056e82f10d8311123587d0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6fed91b 24.01.95