$ git clone -n https://src.fedoraproject.org/rpms/ruby-gnome2.git /var/lib/mock/f38-build-side-42-init-devel-592888-26147/root/chroot_tmpdir/scmroot/ruby-gnome2
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-592888-26147/root/chroot_tmpdir/scmroot/ruby-gnome2'...
$ git fetch origin 2cb310ed3be88a75eab9a3be3cd5c489d7374af1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ruby-gnome2
 * [new ref]         2cb310ed3be88a75eab9a3be3cd5c489d7374af1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2cb310e Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild