$ git clone -n https://src.fedoraproject.org/rpms/mercator.git /var/lib/mock/f31-build-51850-27559/root/thebuilddir/tmp/scmroot/mercator
Cloning into '/var/lib/mock/f31-build-51850-27559/root/thebuilddir/tmp/scmroot/mercator'...
$ git reset --hard 2544c4e6b0c74b7d37a22fa77bb47f52bf25f1d4
HEAD is now at 2544c4e - Fix FTBFS + spec cleanup/modernization fixes rhbz#1604816 and rhbz#1675364