$ git clone -n https://src.fedoraproject.org/rpms/kblackbox.git /var/lib/mock/f41-build-side-1-2751235-31100/root/chroot_tmpdir/scmroot/kblackbox
Cloning into '/var/lib/mock/f41-build-side-1-2751235-31100/root/chroot_tmpdir/scmroot/kblackbox'...
$ git fetch origin 3ad8cfb767e9d51c37e9de493e8b1e6f76c2e9e7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kblackbox
 * [new ref]         3ad8cfb767e9d51c37e9de493e8b1e6f76c2e9e7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3ad8cfb 24.08.1