$ git clone -n https://src.fedoraproject.org/rpms/rubygem-i18n.git /var/lib/mock/f39-build-1499334-34744/root/chroot_tmpdir/scmroot/rubygem-i18n
Cloning into '/var/lib/mock/f39-build-1499334-34744/root/chroot_tmpdir/scmroot/rubygem-i18n'...
$ git fetch origin 782a4d5995baa4066c7e36ef471fb4dcdb9f43ec:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-i18n
 * [new ref]         782a4d5995baa4066c7e36ef471fb4dcdb9f43ec -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 782a4d5 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild