$ git clone -n https://src.fedoraproject.org/rpms/emacs-epc.git /var/lib/mock/f39-build-1559110-37317/root/chroot_tmpdir/scmroot/emacs-epc
Cloning into '/var/lib/mock/f39-build-1559110-37317/root/chroot_tmpdir/scmroot/emacs-epc'...
$ git fetch origin b13ff92526d0961370fe989c4de1bade0ea0a561:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/emacs-epc
 * [new ref]         b13ff92526d0961370fe989c4de1bade0ea0a561 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b13ff92 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild