$ git clone -n https://src.fedoraproject.org/rpms/perl-Pegex.git /var/lib/mock/f39-build-1436095-32039/root/chroot_tmpdir/scmroot/perl-Pegex
Cloning into '/var/lib/mock/f39-build-1436095-32039/root/chroot_tmpdir/scmroot/perl-Pegex'...
$ git fetch origin 39bad6ee5ab5f605c9fb1f46eb0e24baa3f7fb24:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Pegex
 * [new ref]         39bad6ee5ab5f605c9fb1f46eb0e24baa3f7fb24 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 39bad6e Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild