$ git clone -n https://src.fedoraproject.org/rpms/qt6-qtgrpc.git /var/lib/mock/f42-build-868238-176015/root/chroot_tmpdir/scmroot/qt6-qtgrpc
Cloning into '/var/lib/mock/f42-build-868238-176015/root/chroot_tmpdir/scmroot/qt6-qtgrpc'...
$ git fetch origin f4a51d0cf2f3c0b8221f3b827178bf07f933dfcf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6-qtgrpc
 * [new ref]         f4a51d0cf2f3c0b8221f3b827178bf07f933dfcf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f4a51d0 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild