$ git clone -n https://src.fedoraproject.org/rpms/reiserfs-utils.git /var/lib/mock/f31-build-49762-27342/root/thebuilddir/tmp/scmroot/reiserfs-utils
Cloning into '/var/lib/mock/f31-build-49762-27342/root/thebuilddir/tmp/scmroot/reiserfs-utils'...
$ git reset --hard b4b2273c28cd562e3838dbbafb55daf9e16081b6
HEAD is now at b4b2273 - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild