$ git clone -n https://src.fedoraproject.org/rpms/rcs.git /var/lib/mock/f31-build-49535-27305/root/chroot_tmpdir/scmroot/rcs
Cloning into '/var/lib/mock/f31-build-49535-27305/root/chroot_tmpdir/scmroot/rcs'...
$ git reset --hard cd122dadd01dba7ba8e817175e8aa5c43d51e0d8
HEAD is now at cd122da - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild