$ git clone -n https://src.fedoraproject.org/rpms/xylib.git /var/lib/mock/f40-build-781299-131566/root/chroot_tmpdir/scmroot/xylib
Cloning into '/var/lib/mock/f40-build-781299-131566/root/chroot_tmpdir/scmroot/xylib'...
$ git fetch origin 0cbf912a5ec3e7c1a4928e6ed5d3be6c952ed7ec:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xylib
 * [new ref]         0cbf912a5ec3e7c1a4928e6ed5d3be6c952ed7ec -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0cbf912 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild