$ git clone -n https://src.fedoraproject.org/rpms/rubygem-gtk2.git /var/lib/mock/f40-build-772751-126626/root/chroot_tmpdir/scmroot/rubygem-gtk2
Cloning into '/var/lib/mock/f40-build-772751-126626/root/chroot_tmpdir/scmroot/rubygem-gtk2'...
$ git reset --hard f8bbd6c1b64fccc5761a0bad336d7e4ed92ad4c0
HEAD is now at f8bbd6c Rebuild for https://fedoraproject.org/wiki/Changes/Ruby_3.3