$ git clone -n https://src.fedoraproject.org/rpms/rubygem-goocanvas1.git /var/lib/mock/f31-build-86773-31706/root/chroot_tmpdir/scmroot/rubygem-goocanvas1
Cloning into '/var/lib/mock/f31-build-86773-31706/root/chroot_tmpdir/scmroot/rubygem-goocanvas1'...
$ git reset --hard 37215972321a8b6c5741ef7a6cd5d17d85f98d59
HEAD is now at 3721597 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild