$ git clone -n https://src.fedoraproject.org/rpms/kf6-kdeclarative.git /var/lib/mock/f40-build-2410799-60560/root/chroot_tmpdir/scmroot/kf6-kdeclarative
Cloning into '/var/lib/mock/f40-build-2410799-60560/root/chroot_tmpdir/scmroot/kf6-kdeclarative'...
$ git fetch origin b1ebcb23dce1bb88a02b0f977928756915ce29a3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kdeclarative
 * [new ref]         b1ebcb23dce1bb88a02b0f977928756915ce29a3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b1ebcb2 5.249.0