$ git clone -n https://src.fedoraproject.org/rpms/libcuefile.git /var/lib/mock/f41-build-side-1-3080080-38945/root/chroot_tmpdir/scmroot/libcuefile
Cloning into '/var/lib/mock/f41-build-side-1-3080080-38945/root/chroot_tmpdir/scmroot/libcuefile'...
$ git fetch origin 87ce09dd49939eecfc264c985594f68171ed1161:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libcuefile
 * [new ref]         87ce09dd49939eecfc264c985594f68171ed1161 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 87ce09d Bison/Flex sources are missing upstream, only used for one binary in libmpcdec/musepack-tools: https://bugzilla.redhat.com/show_bug.cgi?id=2190295