$ git clone -n https://src.fedoraproject.org/rpms/libx86.git /var/lib/mock/f39-build-1751227-41465/root/chroot_tmpdir/scmroot/libx86
Cloning into '/var/lib/mock/f39-build-1751227-41465/root/chroot_tmpdir/scmroot/libx86'...
$ git fetch origin f9cedef0c384cae56486ad63ec32b536b56fdeb1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libx86
 * [new ref]         f9cedef0c384cae56486ad63ec32b536b56fdeb1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f9cedef Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild