$ git clone -n https://src.fedoraproject.org/rpms/perl-XML-SAX-Base.git /var/lib/mock/f39-build-1439982-32301/root/chroot_tmpdir/scmroot/perl-XML-SAX-Base
Cloning into '/var/lib/mock/f39-build-1439982-32301/root/chroot_tmpdir/scmroot/perl-XML-SAX-Base'...
$ git fetch origin bfebdce259166b84420acefdd90080462899181c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-XML-SAX-Base
 * [new ref]         bfebdce259166b84420acefdd90080462899181c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bfebdce Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild