$ git clone -n https://src.fedoraproject.org/rpms/userspace-rcu.git /var/lib/mock/f41-build-832862-157689/root/chroot_tmpdir/scmroot/userspace-rcu
Cloning into '/var/lib/mock/f41-build-832862-157689/root/chroot_tmpdir/scmroot/userspace-rcu'...
$ git fetch origin e8309b5cecd0c88adf3829483102ec3bf099ee33:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/userspace-rcu
 * [new ref]         e8309b5cecd0c88adf3829483102ec3bf099ee33 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e8309b5 Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild