$ git clone -n https://src.fedoraproject.org/rpms/R-nanotime.git /var/lib/mock/f41-build-821109-152414/root/chroot_tmpdir/scmroot/R-nanotime
Cloning into '/var/lib/mock/f41-build-821109-152414/root/chroot_tmpdir/scmroot/R-nanotime'...
$ git fetch origin c892b354fc2d655098d0ed6af2f25bf935fbb095:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-nanotime
 * [new ref]         c892b354fc2d655098d0ed6af2f25bf935fbb095 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c892b35 Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild