$ git clone -n https://src.fedoraproject.org/rpms/perl-Struct-Dumb.git /var/lib/mock/f39-build-1439406-32252/root/chroot_tmpdir/scmroot/perl-Struct-Dumb
Cloning into '/var/lib/mock/f39-build-1439406-32252/root/chroot_tmpdir/scmroot/perl-Struct-Dumb'...
$ git fetch origin 3ef5d07f0b3cf3bc19047868f000ef9bac443142:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Struct-Dumb
 * [new ref]         3ef5d07f0b3cf3bc19047868f000ef9bac443142 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3ef5d07 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild