$ git clone -n https://src.fedoraproject.org/rpms/rust-uu_pr.git /var/lib/mock/f42-build-3251825-41222/root/chroot_tmpdir/scmroot/rust-uu_pr
Cloning into '/var/lib/mock/f42-build-3251825-41222/root/chroot_tmpdir/scmroot/rust-uu_pr'...
$ git fetch origin d7600a2c7f067a679b84edd328a74685101f8d5d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-uu_pr
 * [new ref]         d7600a2c7f067a679b84edd328a74685101f8d5d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d7600a2 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild