$ git clone -n https://src.fedoraproject.org/rpms/qcoro.git /var/lib/mock/f39-build-1667848-40816/root/chroot_tmpdir/scmroot/qcoro
Cloning into '/var/lib/mock/f39-build-1667848-40816/root/chroot_tmpdir/scmroot/qcoro'...
$ git fetch origin 926b5c5318b650b1ce1205561f2f676a2a350679:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qcoro
 * [new ref]         926b5c5318b650b1ce1205561f2f676a2a350679 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 926b5c5 Rebuild (qt6)