$ git clone -n https://src.fedoraproject.org/rpms/ghc-io-streams.git /var/lib/mock/f42-build-877598-180238/root/chroot_tmpdir/scmroot/ghc-io-streams
Cloning into '/var/lib/mock/f42-build-877598-180238/root/chroot_tmpdir/scmroot/ghc-io-streams'...
$ git fetch origin a272be5dc4263f21e66f966ad0788e88f40a5e3a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-io-streams
 * [new ref]         a272be5dc4263f21e66f966ad0788e88f40a5e3a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a272be5 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild