$ git clone -n https://src.fedoraproject.org/rpms/libxlsxwriter.git /var/lib/mock/f45-build-17320-498/root/chroot_tmpdir/scmroot/libxlsxwriter
Cloning into '/var/lib/mock/f45-build-17320-498/root/chroot_tmpdir/scmroot/libxlsxwriter'...
$ git fetch origin e40c6daf5b1c1a0e814978972a91ed9ee78a4dd0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libxlsxwriter
 * [new ref]         e40c6daf5b1c1a0e814978972a91ed9ee78a4dd0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e40c6da Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild