$ git clone -n https://src.fedoraproject.org/rpms/perl-Math-ConvexHull-MonotoneChain.git /var/lib/mock/f40-build-2018780-46457/root/chroot_tmpdir/scmroot/perl-Math-ConvexHull-MonotoneChain
Cloning into '/var/lib/mock/f40-build-2018780-46457/root/chroot_tmpdir/scmroot/perl-Math-ConvexHull-MonotoneChain'...
$ git fetch origin f06d10921a45bea1353a02f1238ea085e7d49700:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Math-ConvexHull-MonotoneChain
 * [new ref]         f06d10921a45bea1353a02f1238ea085e7d49700 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f06d109 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild