$ git clone -n https://src.fedoraproject.org/rpms/rubygem-middleware.git /var/lib/mock/f39-build-1458606-33072/root/chroot_tmpdir/scmroot/rubygem-middleware
Cloning into '/var/lib/mock/f39-build-1458606-33072/root/chroot_tmpdir/scmroot/rubygem-middleware'...
$ git fetch origin 845abb271a0783b70926c4530a963d6fabdd8ae8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-middleware
 * [new ref]         845abb271a0783b70926c4530a963d6fabdd8ae8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 845abb2 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild