$ git clone -n https://src.fedoraproject.org/rpms/qrca.git /var/lib/mock/f42-build-side-1-3540408-46574/root/chroot_tmpdir/scmroot/qrca
Cloning into '/var/lib/mock/f42-build-side-1-3540408-46574/root/chroot_tmpdir/scmroot/qrca'...
$ git fetch origin ec99135473d5bfa4ffcc90e6d9cb944f14f35177:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qrca
 * [new ref]         ec99135473d5bfa4ffcc90e6d9cb944f14f35177 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ec99135 25.04.2