$ git clone -n https://src.fedoraproject.org/rpms/milter-regex.git /var/lib/mock/f39-build-1577823-37977/root/chroot_tmpdir/scmroot/milter-regex
Cloning into '/var/lib/mock/f39-build-1577823-37977/root/chroot_tmpdir/scmroot/milter-regex'...
$ git fetch origin f5110110a6709a8253d3ea67dd3e1ffe869f521b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/milter-regex
 * [new ref]         f5110110a6709a8253d3ea67dd3e1ffe869f521b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f511011 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild