$ git clone -n https://src.fedoraproject.org/rpms/libpar2.git /var/lib/mock/f39-build-1458288-33049/root/chroot_tmpdir/scmroot/libpar2
Cloning into '/var/lib/mock/f39-build-1458288-33049/root/chroot_tmpdir/scmroot/libpar2'...
$ git fetch origin 40ace5e1502600900a87e8209dd2d14f3fc0932b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libpar2
 * [new ref]         40ace5e1502600900a87e8209dd2d14f3fc0932b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 40ace5e Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild