$ git clone -n https://src.fedoraproject.org/rpms/arianna.git /var/lib/mock/f43-build-side-114511-60912637-6585623/root/chroot_tmpdir/scmroot/arianna
Cloning into '/var/lib/mock/f43-build-side-114511-60912637-6585623/root/chroot_tmpdir/scmroot/arianna'...
$ git fetch origin 2dfd0605df28c63b22d428d926e29e64dd7eb514:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/arianna
 * [new ref]         2dfd0605df28c63b22d428d926e29e64dd7eb514 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2dfd060 25.04.3