$ git clone -n https://src.fedoraproject.org/rpms/kmix.git /var/lib/mock/f41-build-side-114559-60918757-6585810/root/chroot_tmpdir/scmroot/kmix
Cloning into '/var/lib/mock/f41-build-side-114559-60918757-6585810/root/chroot_tmpdir/scmroot/kmix'...
$ git fetch origin 4803b9b869576bf51a6e8a59a2e583e9acb61f3b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kmix
 * [new ref]         4803b9b869576bf51a6e8a59a2e583e9acb61f3b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4803b9b 25.04.3