$ git clone -n https://src.fedoraproject.org/rpms/ghc-singleton-bool.git /var/lib/mock/f40-build-776470-128863/root/chroot_tmpdir/scmroot/ghc-singleton-bool
Cloning into '/var/lib/mock/f40-build-776470-128863/root/chroot_tmpdir/scmroot/ghc-singleton-bool'...
$ git fetch origin b7a370bfb038aa9cd4c9745b4499ef122c945e90:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-singleton-bool
 * [new ref]         b7a370bfb038aa9cd4c9745b4499ef122c945e90 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b7a370b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild