$ git clone -n https://src.fedoraproject.org/rpms/ghc-xml.git /var/lib/mock/f40-build-776226-128705/root/chroot_tmpdir/scmroot/ghc-xml
Cloning into '/var/lib/mock/f40-build-776226-128705/root/chroot_tmpdir/scmroot/ghc-xml'...
$ git fetch origin 525d3bc7858b9f82338199c53b68a287e87ca5a9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-xml
 * [new ref]         525d3bc7858b9f82338199c53b68a287e87ca5a9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 525d3bc Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild