$ git clone -n https://src.fedoraproject.org/rpms/golang-modernc-mathutil.git /var/lib/mock/f40-build-2582882-62397/root/chroot_tmpdir/scmroot/golang-modernc-mathutil
Cloning into '/var/lib/mock/f40-build-2582882-62397/root/chroot_tmpdir/scmroot/golang-modernc-mathutil'...
$ git fetch origin d82f21fd8318cc64b88461626af1c3af6d290610:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-modernc-mathutil
 * [new ref]         d82f21fd8318cc64b88461626af1c3af6d290610 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d82f21f Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild