$ git clone -n https://src.fedoraproject.org/rpms/perl-Gtk2.git /var/lib/mock/f40-build-779130-130214/root/chroot_tmpdir/scmroot/perl-Gtk2
Cloning into '/var/lib/mock/f40-build-779130-130214/root/chroot_tmpdir/scmroot/perl-Gtk2'...
$ git fetch origin 1a40d79d96ecc086aca7cf4f08997d24cabfa584:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Gtk2
 * [new ref]         1a40d79d96ecc086aca7cf4f08997d24cabfa584 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1a40d79 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild