$ git clone -n https://src.fedoraproject.org/rpms/ghc-url.git /var/lib/mock/f40-build-776581-128929/root/chroot_tmpdir/scmroot/ghc-url
Cloning into '/var/lib/mock/f40-build-776581-128929/root/chroot_tmpdir/scmroot/ghc-url'...
$ git fetch origin 81c44516cb604d206ef81b681b8cc1c806da1ae5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-url
 * [new ref]         81c44516cb604d206ef81b681b8cc1c806da1ae5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 81c4451 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild