$ git clone -n https://src.fedoraproject.org/rpms/ursa-major.git /var/lib/mock/f41-build-2568231-25544/root/chroot_tmpdir/scmroot/ursa-major
Cloning into '/var/lib/mock/f41-build-2568231-25544/root/chroot_tmpdir/scmroot/ursa-major'...
$ git fetch origin d1b5a5a645ccba0e1cc5b9a5f7129e7a1dc91f1c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ursa-major
 * [new ref]         d1b5a5a645ccba0e1cc5b9a5f7129e7a1dc91f1c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d1b5a5a Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild