$ git clone -n https://src.fedoraproject.org/rpms/python-readchar.git /var/lib/mock/f39-build-1643242-40230/root/chroot_tmpdir/scmroot/python-readchar
Cloning into '/var/lib/mock/f39-build-1643242-40230/root/chroot_tmpdir/scmroot/python-readchar'...
$ git fetch origin 7542f8871daf5a9043bd2442e38491fde7998295:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-readchar
 * [new ref]         7542f8871daf5a9043bd2442e38491fde7998295 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7542f88 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild