$ git clone -n https://src.fedoraproject.org/rpms/rubygem-gtk3.git /var/lib/mock/f37-build-675734-76024/root/chroot_tmpdir/scmroot/rubygem-gtk3
Cloning into '/var/lib/mock/f37-build-675734-76024/root/chroot_tmpdir/scmroot/rubygem-gtk3'...
$ git reset --hard 4317b9f571e6597d852f737806fb2dc1255295bb
HEAD is now at 4317b9f 4.0.3