$ git clone -n https://src.fedoraproject.org/rpms/perl-Gtk2-Ex-Carp.git /var/lib/mock/f39-build-1438709-32223/root/chroot_tmpdir/scmroot/perl-Gtk2-Ex-Carp
Cloning into '/var/lib/mock/f39-build-1438709-32223/root/chroot_tmpdir/scmroot/perl-Gtk2-Ex-Carp'...
$ git fetch origin 5374e7e6a3da6577dc18af88bdc60d0320963667:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Gtk2-Ex-Carp
 * [new ref]         5374e7e6a3da6577dc18af88bdc60d0320963667 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5374e7e Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild