$ git clone -n https://src.fedoraproject.org/rpms/python-arrow.git /var/lib/mock/f39-build-1428601-31657/root/chroot_tmpdir/scmroot/python-arrow
Cloning into '/var/lib/mock/f39-build-1428601-31657/root/chroot_tmpdir/scmroot/python-arrow'...
$ git fetch origin d779b5bca1b50a5836fc375a8a7e938bb673141f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-arrow
 * [new ref]         d779b5bca1b50a5836fc375a8a7e938bb673141f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d779b5b Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild