$ git clone -n https://src.fedoraproject.org/rpms/replacer.git /var/lib/mock/f40-build-2373119-60406/root/chroot_tmpdir/scmroot/replacer
Cloning into '/var/lib/mock/f40-build-2373119-60406/root/chroot_tmpdir/scmroot/replacer'...
$ git fetch origin 5e6db5377c9b9a732e8488ab1685ceffd838e449:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/replacer
 * [new ref]         5e6db5377c9b9a732e8488ab1685ceffd838e449 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5e6db53 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild