$ git clone -n https://src.fedoraproject.org/rpms/caribou.git /var/lib/mock/f31-build-63666-29416/root/chroot_tmpdir/scmroot/caribou
Cloning into '/var/lib/mock/f31-build-63666-29416/root/chroot_tmpdir/scmroot/caribou'...
$ git reset --hard b673d92a7d4a38492156a9ecff1e3289c139c84a
HEAD is now at b673d92 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild