$ git clone -n https://src.fedoraproject.org/rpms/jblas.git /var/lib/mock/f42-build-3406876-45143/root/chroot_tmpdir/scmroot/jblas
Cloning into '/var/lib/mock/f42-build-3406876-45143/root/chroot_tmpdir/scmroot/jblas'...
$ git fetch origin f4f38c8ba58e497fefd91645fdd917216c6f1b68:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jblas
 * [new ref]         f4f38c8ba58e497fefd91645fdd917216c6f1b68 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f4f38c8 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild