$ git clone -n https://src.fedoraproject.org/rpms/libprojectM.git /var/lib/mock/f45-build-16789-491/root/chroot_tmpdir/scmroot/libprojectM
Cloning into '/var/lib/mock/f45-build-16789-491/root/chroot_tmpdir/scmroot/libprojectM'...
$ git fetch origin 3fdf1e043cb2c9dafd5caaa9db5e4a70a8d203df:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libprojectM
 * [new ref]         3fdf1e043cb2c9dafd5caaa9db5e4a70a8d203df -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3fdf1e0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild