$ git clone -n https://src.fedoraproject.org/rpms/libcerf.git /var/lib/mock/f31-build-58306-28434/root/chroot_tmpdir/scmroot/libcerf
Cloning into '/var/lib/mock/f31-build-58306-28434/root/chroot_tmpdir/scmroot/libcerf'...
$ git reset --hard b1d37eb41d3524db69fe224d5c919238366c8718
HEAD is now at b1d37eb update to 1.13 update homepage and source urls