$ git clone -n https://src.fedoraproject.org/rpms/python-betamax.git /var/lib/mock/f39-build-1573505-37806/root/chroot_tmpdir/scmroot/python-betamax
Cloning into '/var/lib/mock/f39-build-1573505-37806/root/chroot_tmpdir/scmroot/python-betamax'...
$ git fetch origin b50a8bb5dd26bec072100feed069e62a5a875efa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-betamax
 * [new ref]         b50a8bb5dd26bec072100feed069e62a5a875efa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b50a8bb Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild