$ git clone -n https://src.fedoraproject.org/rpms/kf6-kunitconversion.git /var/lib/mock/f42-build-867743-175795/root/chroot_tmpdir/scmroot/kf6-kunitconversion
Cloning into '/var/lib/mock/f42-build-867743-175795/root/chroot_tmpdir/scmroot/kf6-kunitconversion'...
$ git fetch origin 2747c7c0bfbeaf44f72c154dd2085a4977c24130:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kunitconversion
 * [new ref]         2747c7c0bfbeaf44f72c154dd2085a4977c24130 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2747c7c Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild