$ git clone -n https://src.fedoraproject.org/rpms/rubygem-gtk3.git /var/lib/mock/f41-build-808647-145985/root/chroot_tmpdir/scmroot/rubygem-gtk3
Cloning into '/var/lib/mock/f41-build-808647-145985/root/chroot_tmpdir/scmroot/rubygem-gtk3'...
$ git reset --hard fbc3621fd617fb8a5d73504cd848a911ee35d02f
HEAD is now at fbc3621 4.2.2 entry