$ git clone -n https://src.fedoraproject.org/rpms/rubygem-gtk3.git /var/lib/mock/f29-build-438-305/root/thebuilddir/tmp/scmroot/rubygem-gtk3
Cloning into '/var/lib/mock/f29-build-438-305/root/thebuilddir/tmp/scmroot/rubygem-gtk3'...
$ git reset --hard 4345d486053b58ab531c92a45e2d355259c10dad
HEAD is now at 4345d48 3.2.5